CN116648198A - Surgical stapler end effector slides with multiple surface finishes - Google Patents

Abstract

A staple driver actuator for a surgical stapler includes a base having at least one bottom surface. The bottom surface defines a plane and is configured to longitudinally slide relative to a stapling assembly of the surgical stapler. The staple driver actuator further includes at least one rail extending upwardly from the base. The at least one rail includes at least one rail cam surface, and the rail cam surface is inclined relative to the plane. The staple driver actuator further includes a first surface texture on a first portion of the staple driver actuator and a second surface texture on a second portion of the staple driver actuator. The second surface texture is smoother than the first surface texture.

Description

Surgical stapler end effector slides with multiple surface finishes

Background technique

Examples of surgical instruments include surgical staplers, which may be configured for use in laparoscopic and/or open surgery. Some such staplers are operable to grip tissue layers, cut through the gripped tissue layers, and drive staples through the tissue layers to substantially seal the severed tissue layers together near their severed ends. Examples of surgical staplers are disclosed in U.S. Patent No. 7,404,508, issued July 29, 2008, entitled "Surgical Stapling and Cutting Device"; US Patent No. 7,434,715; US Patent No. 7,721,930 issued May 25, 2010 entitled "Disposable Cartridge with Adhesive for Use with a Stapling Device"; issued April 2, 2013 entitled "Surgical Stapling Instrument with An Articulatable End Effector 8,408,439; and US Patent 8,453,914 issued June 4, 2013 titled "Motor-Driven Surgical Cutting Instrument with Electric Actuator Directional Control Assembly". The disclosures of each of the above-cited US patents are incorporated herein by reference in their entirety.

While various surgical stapling instruments and associated components have been made and used, it is believed that no one prior to the present inventor has made or used the invention described in the appended claims.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the general description of the invention given above and the detailed description of the embodiments given below serve to explain the invention principle.

Figure 1 shows a perspective view of an example of an articulating surgical stapling instrument;

Figure 2 shows a side view of the instrument of Figure 1;

Figure 3 shows a perspective view of an open end effector in the instrument of Figure 1;

4A shows a side cross-sectional view of the end effector of FIG. 3 taken along line 4-4 of FIG. 3 with the firing beam in a proximal position;

4B shows a side cross-sectional view of the end effector of FIG. 3 taken along line 4-4 of FIG. 3 with the firing beam in the distal position;

5 shows an end cross-sectional view of the end effector of FIG. 3 taken along line 5-5 of FIG. 3;

Figure 6 shows an exploded perspective view of the end effector of Figure 3;

Figure 7 shows a perspective view of the end effector of Figure 3 positioned at tissue and having been actuated once in the tissue;

8 shows a perspective view of an example of a wedge sled for actuating a staple driver of the instrument of FIG. 1 showing a wedge sled with a cartridge wall support feature and a plurality of surface finishes;

Figure 9 shows a side view of the wedge slide of Figure 8;

10 shows an end cross-sectional view of the end effector of FIG. 3 with the wedge-shaped sled of FIG. 8 captured between the cartridge body and the cartridge tray of the staple cartridge of the end effector;

11 shows a perspective view of another example of a wedge sled for actuating a staple driver of the instrument of FIG. 1, showing a cartridge wall support feature, a staple driver support feature, a tapered distal end Wedge slides with multiple surface finishes;

Figure 12 shows a side view of the wedge slide of Figure 11;

13 shows an end cross-sectional view of the end effector of FIG. 3 with the wedge sled of FIG. 11 captured between the cartridge body and the cartridge tray of the staple cartridge of the end effector;

14A shows a side cross-sectional view of the end effector of FIG. 3, wherein the wedge-shaped sled of FIG. Wedge slides in side position;

14B shows a side cross-sectional view of the end effector of FIG. 3 with the wedge sled of FIG. 11 captured between the cartridge body and the cartridge tray of the staple cartridge of the end effector, showing the wedge sled The distal chamfer of the member partially lifts the corresponding staple driver during distal translation of the wedge sled;

14C shows a side cross-sectional view of the end effector of FIG. 3 with the wedge sled of FIG. 11 captured between the cartridge body and the cartridge tray of the staple cartridge of the end effector, showing the wedge sled The top surface of the base of the piece vertically supports the corresponding staple driver during distal translation of the wedge sled;

14D shows a side cross-sectional view of the end effector of FIG. 3 with the wedge sled of FIG. 11 captured between the cartridge body and the cartridge tray of the staple cartridge of the end effector, showing the wedge sled The cam surface of the sled rail of the member fully lifts the corresponding staple driver during distal translation of the wedge-shaped sled;

15 shows an end cross-sectional view of the end effector of FIG. 3 with another exemplary wedge sled captured between the cartridge body and the cartridge tray of the staple cartridge of the end effector, showing Wedge slides with inwardly sloped front inner and outer slide rails and undercuts;

16 shows an end cross-sectional view of the end effector of FIG. 3 with another exemplary wedge sled captured between the cartridge body and the cartridge tray of the staple cartridge of the end effector, showing Wedge-shaped slides have inner and outer slide rails with incline front ends;

17 shows an end cross-sectional view of the end effector of FIG. 3 with another exemplary wedge sled captured between the cartridge body and the cartridge tray of the staple cartridge of the end effector, showing The wedge-shaped slider has an inner slider guide rail with an inward front end;

Figure 18 shows a cross-sectional view of another exemplary wedge slide with a V-shaped base;

Figure 19 shows a cross-sectional view of another exemplary wedge slide with a bifurcated central nose;

20 illustrates an end cross-sectional view of the end effector of FIG. 3 with an exemplary staple cartridge removably mounted into the channel of the lower jaw of the end effector, showing the staple cartridge having various biasing features; and

21 shows an end cross-sectional view of the end effector of FIG. 3 with an exemplary staple cartridge removably mounted into the channel of the lower jaw of the end effector, showing the staple cartridge with A cartridge tray having protrusions for reducing the tissue gap between the upper deck of the staple cartridge and the inner surface of the anvil.

The drawings are not intended to be limiting in any way, and it is contemplated that various embodiments of the invention may be carried out in numerous other ways, including those not necessarily shown in the drawings. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate several aspects of the invention and together with the description serve to explain the principles of the invention; it is to be understood, however, that the invention is not limited to the precise arrangements shown. .

Detailed ways

The following description of certain examples of the invention should not be used to limit the scope of the invention. Other examples, features, aspects, embodiments and advantages of the invention will be apparent to those skilled in the art from the following description, shown by way of example, and one of the best modes contemplated for carrying out the invention . As will be realized, the invention is capable of other different and obvious aspects, all without departing from the invention. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive.

I. Examples of Surgical Staplers

Figures 1 to 7 illustrate an example of a surgical stapling and severing instrument (10) sized to pass through a trocar cannula, thoracotomy, or Other incisions are inserted into the patient's surgical site to perform the surgical procedure. The instrument (10) of the present example includes a handle portion (20) connected to a shaft (22). Shaft (22) terminates distally in articulation joint (11), which is further coupled with end effector (12). It should be understood that terms such as "proximal" and "distal" are used herein with reference to the handle portion (20) of the clinician's grasping instrument (10). Thus, the end effector (12) is located distally with respect to the more proximal handle portion (20).

Once the articulation joint (11) and end effector (12) are inserted into the patient, the articulation joint (11) can be remotely articulated via the articulation control (13), as shown in phantom in Figure 1, The end effector (12) is allowed to deflect at a desired angle (α) from the longitudinal axis (LA) of the shaft (22). By way of example only, the articulation joint (11) and/or the articulation control (13) may be constructed and operable in accordance with at least some of the teachings of the following U.S. patent: title filed November 17, 2015 U.S. Patent No. 9,186,142 for "Surgical Instrument End EffectorArticulation Drive with Pinion and Opposing Racks," the disclosure of which is incorporated herein by reference in its entirety; and/or issued October 24, 2017, entitled "Surgical Instrument with Multi- No. 9,795,379 to Diameter Shaft", the disclosure of which is incorporated herein by reference in its entirety. Various other suitable forms that articulation joint (11) and articulation control (13) may take will be apparent to those skilled in the art in view of the teachings herein.

The end effector (12) of the present example includes a lower jaw (16) and an upper jaw in the form of a pivotable anvil (18). By way of example only, the lower jaw (16) may be constructed and operative in accordance with at least some of the teachings of the following U.S. Patent: "Installation Features for Surgical Instrument End Effector Cartridge" issued November 7, 2017 US Patent No. 9,808,248, the disclosure of which is incorporated herein by reference in its entirety. The anvil (18) can be constructed and operated in accordance with at least some of the teachings of U.S. Patent No. 10,092,292, entitled "Staple Forming Features for Surgical Stapling Instrument," issued October 9, 2018, the disclosure of which is incorporated by reference The entire text is incorporated herein. Various other suitable forms that lower jaw (16) and anvil (18) may take will be apparent to those skilled in the art in view of the teachings herein.

The handle portion (20) includes a pistol grip (24) and a closure trigger (26). A closure trigger (26) is pivotable toward the pistol grip (24) to cause the anvil (18) to clamp or close toward the lower jaw (16) of the end effector (12). Such closure of the anvil (18) is provided by a closure tube (32) and a closure ring (33), which oppose each other in response to the pivoting of the closure trigger (26) relative to the pistol grip (24). Translate longitudinally on the handle portion (20). A closed tube (32) extends along the length of the shaft (22); and a closed loop (33) is positioned distally of the articulation joint (11). The articulation joint (11) is operable to transmit longitudinal motion from the closed tube (32) to the closed loop (33).

The handle portion (20) also includes a firing trigger (28). An elongated member (not shown) extends longitudinally through shaft (22) and transmits longitudinal firing motion from handle portion (20) to firing beam (14) in response to actuation of firing trigger (28). This distal translation of firing beam (14) causes tissue clamped in end effector (12) to be stapled and severed, as will be described in more detail below. Thereafter, triggers (26, 28) are released to release the tissue from end effector (12).

As best seen in FIGS. 4A-4B , the firing beam ( 14 ) of the present example includes a transversely oriented upper pin ( 38 ), a firing beam cap ( 44 ), a transversely oriented middle pin ( 46 ) and a distally positioned pin ( 38 ). cutting edge (48). The upper pin (38) is positioned within a longitudinal anvil slot (42) of the anvil (18) and is capable of translating within said longitudinal anvil slot. The firing beam top cover (44) slidably engages the lower surface of the lower jaw (16) by extending the firing beam (14) through the lower jaw slot (45) (shown in FIG. 4B ), which ( 45) is formed through the lower jaw (16). The middle pin (46) slidably engages the top surface of the lower jaw (16), cooperating with the firing beam top cover (44). Therefore, the firing beam (14) must be spaced apart from the end effector (12) during firing. By way of example only, the firing beam (14) and/or associated lockout feature may be constructed and operated in accordance with at least some of the teachings of the following U.S. Patent: "Lockout Feature for Movable No. 9,717,497 to "Cutting Member of Surgical Instrument", the disclosure of which is incorporated herein by reference in its entirety. Other suitable forms that firing beam (14) may take will be apparent to those skilled in the art in view of the teachings herein.

Figure 3 shows the proximally positioned firing beam (14) of the present example and the anvil (18) pivoted to an open position, allowing an unspent staple cartridge (37) to be removably mounted to the lower jaw (16) in the channel. As best seen in FIGS. 5-6 , the staple cartridge ( 37 ) of the present example includes a cartridge body ( 70 ) presenting an upper platform ( 72 ) coupled to a lower cartridge tray ( 74 ). As best seen in Figure 3, a vertical slot (49) is formed through a portion of staple cartridge (37). Three rows of nail holes (51) are formed through the upper platform (72) on one side of the vertical slot (49), and another set of three rows of nail holes (51) are formed through the vertical slot (49). ) through the upper platform (72) on the other side. Of course, any other suitable number of rows of staples may be provided (eg, two rows, four rows, or other numbers). Referring back to Figures 4A-6, the wedge sled (41) and the plurality of staple drivers (43) are captured between the cartridge body (70) and the tray (74), wherein when the staple cartridge (37) is in the pre-fired ( or "unused") state, the wedge-shaped slider (41) is positioned at the proximal side of the nail driver (43). The wedge sled (41) is movable longitudinally within the staple cartridge (37); and the staple driver (43) is movable vertically within the staple cartridge (37). Staples (47) are also positioned within cartridge body (70), above corresponding staple drivers (43). Specifically, each staple (47) is driven vertically within the cartridge body (70) by a staple driver (43) to drive the staple (47) out through the associated staple hole (51). As best seen in FIGS. 4A-4B and FIG. 6 , wedge sled ( 41 ) presents a ramped cam surface that when wedge sled ( 41 ) is driven distally through staple cartridge ( 37 ), the ramped cam surface Push the staple driver (43) upwards.

By way of example only, staple cartridge (37) may be constructed and operated in accordance with at least some of the teachings of the following U.S. Patent: "Integrated Tissue Positioning and Jaw Alignment Features for Surgical Stapler" issued December 13, 2016 No. 9,517,065 of ", the disclosure of which is incorporated herein by reference in its entirety. Other suitable forms that cartridge (37) can take will be apparent to those skilled in the art in view of the teachings herein.

With the end effector (12) closed as shown in FIGS. Slot (42) to advance firing beam (14) into engagement with anvil (18). A push block (80) (shown in FIG. 5 ) located at the distal end of the firing beam (14) is configured to engage the wedge slide (41) such that when the firing trigger (28) is actuated , when the firing beam (14) advances distally through the staple cartridge (37), the push block (80) pushes the wedge-shaped slide (41) distally. During such a firing, the cutting edge (48) of the firing beam (14) enters the vertical slot (49) of the staple cartridge (37), thereby severing the staple clamped between the staple cartridge (37) and the anvil (18). organization. As shown in Figures 4A-4B, the intermediate pin (46) and push block (80) actuate the staple cartridge (37) together by entering the slot (49) in the staple cartridge (37) to move the wedge sled (41) is driven into upward jacking contact with the staple driver (43), which in turn drives the staples (47) outward through the staple holes (51) and forms the staples with the staples on the inner surface of the anvil (18) Dimples (53) (shown in Figure 3) form contacts. Figure 4B shows the firing beam (14) fully translated distally after the tissue has been severed and stapled. It should also be understood that the staple forming pockets (53) have been intentionally omitted from the view in Figures 4A-4B; however, the staple forming pockets (53) are shown in Figure 3 . It should also be understood that the anvil ( 18 ) has been intentionally omitted from the view of FIG. 5 .

Figure 7 shows the end effector (12) having been actuated through a layer ( _L1 , _L2 ) of tissue (T) with a single stroke. As shown, cutting edge (48) (obscured in Figure 7) has cut through tissue (T) while staple driver (43) has driven three rows of alternating staples (47) through Tissue (T) on each side of the resulting cut line. In this example, the staples (47) are all oriented substantially parallel to the cutting line, but it should be understood that the staples (47) may be positioned in any suitable orientation. In this example, after the first stroke is complete, the end effector (12) is withdrawn from the trocar or incision, the empty staple cartridge (37) is replaced with a new staple cartridge, and then the end effector (12) is again Inserted through the trocar or incision to the suture site for further cutting and suturing. This process can be repeated until the desired number of incisions and staples (47) have been provided. Anvil (18) may need to be closed to facilitate insertion and withdrawal by a trocar; and anvil (18) may need to be opened to facilitate replacement of staple cartridge (37).

In some versions, instrument (10) provides motorized control of firing beam (14). By way of example only, such motorization may be provided in accordance with at least some of the teachings of the following U.S. Patent: U.S. Patent, published Apr. 18, 2017, entitled "Distal Tip Features for End Effector of Surgical Instrument" 9,622,746, the disclosure of which is incorporated herein by reference in its entirety; and/or U.S. Patent 8,210,411, issued July 3, 2012, entitled "Motor-Driven Surgical Instrument," the disclosure of which is incorporated by reference The entire text is incorporated herein. Other suitable components, features, and configurations for providing maneuvering of firing beam (14) will be apparent to those skilled in the art in view of the teachings herein. It should also be understood that some other versions may provide manual drive to the firing beam (14), so that the motor may be omitted.

II. Exemplary Slides with Bin Wall Support Features and Multiple Surface Finishes

In some cases, it may be desirable to provide a wedge sled configured to provide stiffness to the staple cartridge (37) by supporting and/or stabilizing the walls of the cartridge body (70) adjacent the wedge sled, thereby Alignment between staple holes (51 ) and corresponding staple forming pockets (53) is facilitated during clamping of tissue between staple cartridge (37) and anvil (18) and/or during firing. Additionally or alternatively, it may be desirable to provide wedge slides with a plurality of different surface finishes (also referred to as "surface texture" or "surface topography"). Such multiple different surface finishes may allow wedge slides to be manufactured through a process that imparts an initial, relatively rough surface finish to the surface of the entire wedge slide with the option of providing a final, relatively smooth surface finish. The surface is fixed so that the selected surface can interact smoothly with a corresponding portion of the staple cartridge (37), such as the staple driver (43). Figures 8-10 illustrate an exemplary wedge slide (110) that provides such functionality. The wedge slide (110) is similar to the wedge slide (41) described above, except as further described below. For example, wedge sled (110) occupies the same amount of space longitudinally within staple cartridge (37) as wedge sled (41), thereby rendering wedge sled (110) substantially interchangeable with wedge sled (41).

The wedge slide (110) of this example includes a base including a base platform (112) and a central raised platform (114) extending upwardly from the base platform (112). In the example shown, base platform (112) has a substantially planar bottom surface (116) that defines a horizontal plane and is configured to enable the wedge sled (110) to move longitudinally through staple cartridge (37). Slide along the tray (74) lengthwise. Base platform (112) also has a pair of laterally opposed substantially planar top surfaces (118) parallel to bottom surface (116), and raised platform (114) similarly has laterally opposed pairs parallel to bottom surface (116). A pair of substantially planar top surfaces (120). As best shown in Figure 10, the top surfaces (118, 120) are configured to face and/or slidably contact or otherwise engage a corresponding bottom surface of a corresponding wall (71) of the cartridge body (70), thereby Wedge sled (110) vertically supports counter wall (71) as it moves longitudinally through cartridge (37).

The base of this version also includes: a lower chamfer (122) that slopes upwardly and distally from the distal end of the bottom surface (116) to the outer and inner distal ends of the base platform (112); A pair of outer upper chamfers (124) slope downwardly and distally from respective distal ends of the top surface (118) of the base platform (112) to outer distal ends of the base platform (112) and a pair of inner upper chamfers (126) that slope downwardly and distally from respective distal ends of the top surface (120) of the raised platform (114) to the base platform (112 ) at the inner distal end. The chamfers (122, 124, 126) may also be referred to as "tapered surfaces" or "bevels". Lower chamfer (122) may extend across the width of base platform (112) and may have a length greater than the thickness of base platform (112) (e.g., between bottom surface (116) and either top surface (118)) . Likewise, outer upper chamfers (124) may each have a length greater than the thickness of base platform (112). Lower chamfer (122) can be configured to facilitate wedge sled (110) in the position by reducing the possibility of the distal end of base platform (112) catching tray (74) or otherwise being blocked by the tray. Unimpeded longitudinal movement of the staple cartridge (37) in the distal direction. For example, when wedge sled (110) is driven distally through staple cartridge (37), lower chamfer (122) may push tray (74) (which may be constructed of a flexible material) downward slightly away from cartridge body (70) The bottom surface of the wall (71). In some versions, any one or more of the chamfers (122, 124, 126) may be omitted. For example, any one or more of the chamfers (122, 124, 126) may be replaced by one or more corresponding fillets.

The wedge slide (110) also includes a pair of laterally opposite outer slide rails (130) extending upwardly from the base platform (112), and laterally opposing pair of outer slide rails (130) extending upwardly from both the base platform (112) and the raised platform (114). A pair of inner slide rails (132). The slider guides (130, 132) may also be referred to as "cam ramps" or "cam wedges". The slider guides (130, 132) of the present version extend substantially straight and upright from the respective top surfaces (118, 120) of the base platform (112) and raised platform (114) such that the slider guides (130, 132) are perpendicular to the horizontal plane. oriented and parallel to the vertical-longitudinal plane. In the example shown, inner slider rails (132) are laterally spaced from adjacent outer slider rails (130) to define a top surface (118) of base platform (112). In this regard, the top surfaces (118) of the base platforms (112) each extend at least partially along the length of the slider rails (130, 132), and the top surfaces (120) of the raised platforms (114) each extend at least partially along the length of the slider rails (130, 132). Extends the length of the corresponding inner slide rail (132). The outer slider rails (130) of the present version each have a first height relative to the bottom surface (116) of the base platform (112), while the inner slider rails (132) each have a first height relative to the bottom surface of the base platform (112) (116) A second height less than the first height. Also in the example shown, the outer and inner slider rails (130, 132) each terminate proximally at the same longitudinal location (e.g., at the proximal end of the base platform (112)), while the outer slider rails ( 130) each terminate distally at a first longitudinal position, and the inner slider rails (132) each terminate distally at a second longitudinal position distal relative to the first longitudinal position such that the outer slider rails ( 130) each have a first length and the inner slider rails (132) each have a second length greater than the first length. Thus, the distal ends of the outer slider rails (130) are aligned with each other in the longitudinal direction, and the distal ends of the inner slider rails (132) are aligned with each other in the longitudinal direction and extend from the outer slider rails (130). ) is offset at the distal end.

As best shown in Figure 10, the slider guides (130, 132) are configured to be received within corresponding longitudinally extending slots (73) of the cartridge body (70) and are configured to slidably contact or otherwise Respective side surfaces of corresponding walls (71 ) of cartridge body (70) are engaged, thereby stabilizing walls (71 ) horizontally as wedge sled (110) moves longitudinally through cartridge (37). For example, outer and inner slider rails (130, 132) may inhibit lateral inward and/or lateral outward deflection (eg, bending) of wall (71). In this regard, slider rails (130, 132) may each have a thickness equal to or slightly less than the width of the corresponding slot (73). In some versions, the slider guides (130, 132) may additionally or alternatively be configured to slidably contact or otherwise engage respective upper slot surfaces of corresponding slots (73) of the cartridge body (70), Upper deck (72) is thereby supported vertically as wedge sled (110) moves longitudinally through staple cartridge (37).

Each sled track (130, 132) of wedge sled (110) presents one or more corresponding ramped cam surfaces (140, 142, 144, 146) for use as wedge sled (110) is driven distally through staple cartridge (37) The staple driver (43) is lifted upwards to drive the corresponding staple (47) outward through the corresponding staple hole (51). In the example shown, each outer slider rail (130) includes a front cam surface (140) oriented at a first angle relative to a horizontal plane defined by bottom surface (116) and a second angled relative to the horizontal plane. The rear cam surfaces (142) are oriented such that the outer slider rails (130) have the same side elevation profile as one another. Likewise, each inner slider guide (132) includes a front cam surface (144) oriented at a first angle relative to the horizontal plane and a rear cam surface (146) oriented at a third angle relative to the horizontal plane such that the inner slide The member rails (132) have the same side elevation profile as each other and a different elevation profile than that of the outer slider rail (130). Thus, wedge slide (110) may be substantially symmetrical about a vertical-longitudinal plane (at least with respect to the configuration of slide rails (130, 132)).

In this version, the first angle is greater than the second angle, which is greater than the third angle. Alternatively, any other suitable relative angle may be used. In the example shown, upper chamfers (124, 126) are also oriented at a first angle relative to the horizontal plane such that each front cam surface (140) of outer slider rail (130) is aligned with a corresponding outer upper chamfer (124) seamlessly adjoin (and have side elevation profiles overlapping therewith) to jointly define a single continuous surface, and such that each front cam surface (144) of the inner slider rail (132) is free from a corresponding inner upper chamfer (126) seamly adjoining (and having a side elevation profile overlapping therewith) to jointly define another single continuous surface.

The wedge slide (110) also includes a central nose (150) extending upwardly from the raised platform (114) between the inner slide rails (132) and also from the raised platform (114) and the base platform. (112) both extend distally to distal tip (152). In the example shown, central nose (150) is laterally spaced from each inner slider rail (132) to define a top surface (120) of raised platform (114). More specifically, central nose (150) is equidistantly spaced from inner slider rail (132). The central nose (150) of the present version includes a lower portion (154) extending distally from both the base platform (114) and the raised platform (154) to the distal tip (152), and from the raised platform (112). ) and the upper portion (156) extending upwardly from both the lower portion (114).

As best shown in Figure 9, the lower portion (154) of the central nose (150) of this version includes a gradual slope from the distal tip down and proximally to the lower chamfer (122) of the base platform (112). Reduced bottom surface (160). Tapered bottom surface (160) can be configured to facilitate wedge-shaped slide (110) in the distal direction by reducing the likelihood of distal tip (152) catching tray (74) or otherwise being blocked by the tray. Unhindered longitudinal movement through the staple cartridge (37). For example, when wedge sled (110) is driven distally through staple cartridge (37), tapered bottom surface (160) may push tray (74) (which may be constructed of a flexible material) downward slightly away from cartridge body (70). ) of the bottom surface of the wall (71). In the example shown, tapered bottom surface (160) is oriented at the same angle as bottom chamfer (122) relative to a horizontal plane defined by bottom surface (116) such that tapered bottom surface (160) is Chamfers (122) seamlessly adjoin to collectively define a single continuous chamfer for further facilitating unhindered longitudinal movement of wedge sled (110) through staple cartridge (37) in the distal direction. In some versions, tapered bottom surface (160) may be omitted. For example, the tapered bottom surface (160) may be replaced by one or more corresponding rounded corners.

The upper portion (156) of the central nose (150) of this version is substantially perpendicular to the horizontal plane defined by the bottom surface (116). As shown, upper portion (156) extends longitudinally from the proximal end of raised platform (114) to distal tip (152) such that upper portion (156) is at least partially opposed to the distal end of base platform (112). The side ends are positioned distally relative to the distal ends of the slider rails (130, 132) and such that the upper portion (156) extends at least partially along the length of each slider rail (130, 132).

In the example shown, the lower portion (154) of the central nose (150) extends laterally outward relative to the upper portion (156) on opposite sides of the upper portion (156) to define a distance from the raised platform (114). Respective top surfaces (120) extend longitudinally to a pair of laterally opposing upwardly facing flange surfaces (162) of distal tip (152). More specifically, flange surface (162) is substantially planar, parallel to a horizontal plane defined by bottom surface (116), and is positioned relative to bottom surface (116) in relation to the top surface (114) of raised platform (114). 120) at the same height such that flange surface (162) seamlessly adjoins corresponding top surface (120) of raised platform (114) to jointly define a corresponding single continuous surface. As shown, each flange surface (162) is positioned at least partially distally relative to the distal end of base platform (112) and relative to the distal end of slider rails (130, 132).

As best shown in Figure 10, central nose (150) is configured to be at least partially received within vertical slot (49) of staple cartridge (37). In some versions, central nose (150) is configured to slidably contact or otherwise engage inner wall (71) of cartridge body (70), thereby moving longitudinally through wedge-shaped sled (110) through staple cartridge ( 37) supports vertically and/or stabilizes the inner wall (71) horizontally. In this regard, flange surface (162) of the present version faces and slidably contacts or otherwise engages a corresponding lower surface of inner wall (71), thereby moving longitudinally through the staple cartridge as wedge-shaped sled (110) (37) supports the inner wall (71) vertically. Additionally, upper portion (156) of the present version slidably contacts or otherwise engages the laterally inward surface of inner wall (71), thereby stabilizing horizontally as wedge sled (110) moves longitudinally through staple cartridge (37). inner wall (71). For example, upper portion (156) can inhibit lateral inward deflection (eg, bending) of inner wall (71). In this regard, the upper portion (156) may have a thickness equal to or slightly less than the width of the vertical slot (49), while the lower portion (154) may have a thickness greater than the width of the vertical slot (49).

Since each flange surface (162) of central nose (150) is at least partially positioned distally relative to the distal ends of sled rails (130, 132), when wedge-shaped sled (110) moves longitudinally through the staple cartridge (37), the flange surface (162) can vertically support the inner wall (71) of the cartridge body (70) in a distal longitudinal position relative to the slider rails (130, 132). Likewise, because upper portion (156) is at least partially positioned distally relative to the distal ends of sled rails (130, 132), when wedge-shaped sled (110) moves longitudinally through staple cartridge (37), the upper portion (156) can stabilize the inner wall (71) of the cartridge body (70) horizontally in a distal longitudinal position relative to the slider rails (130, 132). In this manner, the central nose portion is positioned before (e.g., at least immediately before) the corresponding staple driver (43) is lifted by the corresponding sled rail (130, 132) to drive the corresponding staple (47) outwardly through the staple hole (51 ). (150) may provide vertical support and/or horizontal stability to the cartridge body (70) at longitudinal locations along the length of the cartridge body (70) corresponding to each staple hole (51). By providing vertical support and/or horizontal stability to the cartridge body (70) at such longitudinal positions prior to lifting the staple drivers (43) to drive the staples (47) outwardly through the staple holes (51) at such longitudinal positions The central nose (150) facilitates proper alignment of each staple hole (51) with the corresponding staple forming pocket (53) on the inner surface of the anvil (18) prior to deployment and forming of each staple (47). alignment. For example, the central nose (150) can be used by assisting in maintaining the upper platform (72) substantially parallel to the inner surface of the anvil (18) having the staple forming pocket (53) and/or by inhibiting what would otherwise result in the staple hole (51). ) relative to the corresponding staple forming pocket (53) angled (e.g., laterally inward or laterally outward) of the inner wall (71) to facilitate the alignment of each staple hole (51) with the corresponding staple forming pocket (53) vertical and/or angular alignment.

In addition, because the top surfaces (118, 120) of the base platform (112) and raised platform (114) each extend at least partially along the length of the corresponding slider track (130, 132), the top surfaces (118, 120) can hold the cartridge body (70) ) are vertically supported at the same longitudinal position where the sled guides (130, 132) are located when the wedge-shaped sled (110) moves longitudinally through the staple cartridge (37). In this manner, the corresponding staple driver (43) is lifted by the corresponding sled rail (130, 132) to drive the corresponding staple (47) outwardly through the staple hole (51) substantially simultaneously (e.g., during at least a portion of its duration) The base platform (112) and/or raised platform (114) may provide vertical support to the cartridge body (70) along the length of the cartridge body (70) at longitudinal locations corresponding to each staple hole (51).

By providing vertical support to the cartridge body (70) at such longitudinal positions substantially simultaneously with lifting the staple drivers (43) to drive the staples (47) outwardly through the staple holes (51) at such longitudinal positions, the As each staple (47) is deployed and formed, the base platform (112) and/or raised platform (114) may facilitate each staple hole (51) with a corresponding staple forming dimple on the inner surface of the anvil (18) Proper alignment of (53). For example, base platform (112) and/or raised platform (114) can facilitate each by assisting in maintaining upper platform (72) substantially parallel to the inner surface of anvil (18) having staple forming pockets (53). The staple holes (51 ) are vertically and/or angularly aligned with the corresponding staple forming pockets (53). Since the top surface (120) of the raised platform (114) seamlessly adjoins the corresponding flange surface (162), the central nose (150) and the raised platform (114) can cooperate to facilitate each nail hole (51 ) with corresponding staple forming pockets (53) on the inner surface of the anvil (18) from at least immediately prior to deploying and forming each staple (47) to the completion of the deployment and forming of each staple (47). allow.

In addition, since the upper portion (156) of the central nose (150) extends at least partially along the length of each slider track (130, 132), the upper portion (156) can draw the wall (71) of the cartridge body (70) Stabilized horizontally at the same longitudinal position that sled guides (130, 132) are in when wedge sled (110) moves longitudinally through cartridge (37). In this manner, the corresponding staple driver (43) is lifted by the corresponding sled rail (130, 132) to drive the corresponding staple (47) outwardly through the staple hole (51) substantially simultaneously (e.g., during at least a portion of its duration) The central nose (150) can provide horizontal stability to the cartridge body (70) along the length of the cartridge body (70) at longitudinal positions corresponding to each staple hole (51). By providing horizontal stability to the cartridge body (70) at such longitudinal positions substantially simultaneously with lifting the staple drivers (43) to drive the staples (47) outwardly through the staple holes (51) at such longitudinal positions, While each staple (47) is being deployed and formed, the central nose (150) can facilitate proper alignment of each staple hole (51) with the corresponding staple forming pocket (53) on the inner surface of the anvil (18) . For example, the central nose (150) may act by inhibiting lateral deflection of the inner wall (71) that would otherwise cause the staple hole (51) to be angled (e.g., laterally inward or laterally outward) relative to the corresponding staple forming pocket (53). to facilitate vertical and/or angular alignment of each staple hole (51) with the corresponding staple forming pocket (53). As discussed above, the slider guides (130, 132) themselves can horizontally stabilize the corresponding walls (71) of the cartridge body (70) in their respective longitudinal positions, and thus also by inhibiting the Lateral deflection of the inner wall (71) that is angled (e.g., laterally inward or laterally outward) to the corresponding staple forming pocket (53) to facilitate vertical alignment of each staple hole (51) with the corresponding staple forming pocket (53) and/or angular alignment. Accordingly, as wedge sled (110) moves longitudinally through staple cartridge (37), central nose (150) and sled rails (130, 132) may cooperatively move toward each other at the respective longitudinal positions of each sled rail (130, 132). The cartridge body (70) provides horizontal stability. It should be understood that the anvil ( 18 ) has been intentionally omitted from the view of FIG. 10 .

Wedge slide (110) may be formed from any suitable material or combination of materials including, but not limited to, metallic materials such as stainless steel (eg, hardened stainless steel) or titanium. In some versions, wedge slide (110) may be manufactured via a metal injection molding (MIM) process. It will be appreciated that such a MIM process may provide improved compressive support and reduced lateral deflection to the wedge slide (110) as compared to, for example, a wedge slide (110) formed from a plastic material, and may allow the wedge slide ( 110) Can provide improved vertical support and/or horizontal stability to the cartridge body (70) during use (eg, clamping and/or firing). For example, such a MIM process may include molding the wedge slide (110) as a single monolithic piece by mixing liquid MIM feedstock of metal powder and binder. The MIM process may also include subjecting the wedge slide (110) to various types of conditioning including, but not limited to, cleaning, thermal debonding, and/or sintering.

In any event, after the MIM process is complete, all surfaces of the wedge slider (110) may have an initial (eg, raw MIM) surface finish, including the cam surfaces (140, 142, 144, 146) of the slider rails (130, 132). Such an initial surface finish may be rough, abrasive, and/or grainy, and may generally resemble the texture of pitted sandpaper. Accordingly, the selected surface of the wedge slide (110) can be further adjusted to refine or otherwise remove the initial surface finish from the selected surface and to provide the selected surface with a relatively smoother (e.g., finer) surface finish than the initial surface finish. , more polished) final surface finish. For example, the cam surfaces (140, 142, 144, 146) of the slider rails (130, 132) may be machined to remove an initial surface finish from the cam surfaces (140, 142, 144, 146) and to provide such final surface finishes to the cam surfaces (140, 142, 144, 146). The final surface finish of the cam surfaces (140, 142, 144, 146) can promote reduced friction and smooth interaction between the cam surfaces (140, 142, 144, 146) and the staple drivers (43), and thereby minimize the friction of the staple drivers (43) caused by the cam surfaces ( 140, 142, 144, 146) wear of the parts in contact.

While selected surfaces provided with a final surface finish have been described in the form of cam surfaces (140, 142, 144, 146), it should be understood that any other surface of wedge slide (110) may additionally or alternatively be provided with a final surface finish. For example, bottom surface (116) may be provided with a final surface finish to promote reduced friction and smooth interaction between bottom surface (116) and tray (74).

In some versions, the remaining non-selected surfaces of wedge sled (110) may not be further adjusted such that the initial surface finish may remain on the non-selected surfaces during use (eg, clamping and/or firing). For example, the top surfaces (118, 120) of the base platform (112) and raised platform (114) and/or the flange surface (162) of the central nose (150) may maintain the original surface finish. As another example, each surface of wedge slide (110) may retain an initial surface finish, except for cam surfaces (140, 142, 144, 146) of slide rails (130, 132). Accordingly, selected surfaces of wedge slide (110) may have a final surface finish, while non-selected surfaces of wedge slide (110) may have an initial surface finish such that wedge slide (110) may have at least two different surfaces finish.

Selected and non-selected surfaces may be determined based on specific components of cartridge (37) and/or firing beam (14) that interact with each individual surface of wedge sled (110). In this regard, the final surface finish may be more desirable for surfaces of wedge sled (110) that interact with certain predetermined components of cartridge (37) and/or firing beam (14) than other surfaces. For example, the camming surfaces (140, 142, 144, 146) of the sled rails (130, 132) may be selected based on their interaction with the staple drivers (43) to receive the final surface finish, while the remaining surfaces of the sled rails (130, 132), the base platform (112 ), the top surface (120) of the raised platform (114), and/or the flange surface (162) of the central nose (150) may not Selected to receive final surface finish. As another example, bottom surface (116) may be selected to receive a final surface finish based on its interaction with tray (74), while the proximal end surface of wedge-shaped slide (110) may be selected based on its interaction with push block ( 80) are not selected to receive the final surface finish.

III. Having a Cartridge Wall Support Feature, a Staple Driver Support Feature, a Tapered Distal End, and a Multiple Surface Finish Exemplary sliders for degrees

In some cases, it may be desirable to provide a wedge-shaped slide configured to support the staple driver (43) prior to fully lifting the staple driver (43) to drive the corresponding staple (47) outwardly through the corresponding staple hole (51 ). ), thereby facilitating alignment between staple drivers (43) and corresponding staple forming pockets (53) during firing. Additionally or alternatively, it may be desirable to provide a wedge sled configured to provide rigidity to the staple cartridge (37) and/or have a plurality of features as discussed above with respect to the wedge sled (110). Different surface finishes (also known as "surface texture" or "surface topography"). Figures 11-13 illustrate an exemplary wedge slide (210) that provides such functionality. The wedge slide (210) is similar to the wedge slide (110) described above, except as otherwise described below. For example, wedge sled (210) occupies the same amount of space longitudinally within staple cartridge (37) as wedge sled (41, 110), thereby rendering wedge sled (210) substantially interchangeable with wedge sled (41, 110).

The wedge slide (210) of this example includes a base including a base platform (212) and a central raised platform (214) extending upwardly from the base platform (212). In the example shown, base platform (212) has a substantially planar bottom surface (216) that defines a horizontal plane and is configured to enable a wedge sled (210) to move longitudinally through staple cartridge (37). Slide along the tray (74) lengthwise. Base platform (212) also has a pair of laterally opposed substantially planar top surfaces (218) parallel to bottom surface (216), and raised platform (214) similarly has laterally opposed pairs parallel to bottom surface (216). A pair of substantially planar top surfaces (220). As best shown in Figure 13, the top surfaces (218, 220) are configured to face and/or slidably contact or otherwise engage a corresponding bottom surface of a corresponding wall (71) of the cartridge body (70), thereby Wedge sled (210) vertically supports counter wall (71) as it moves longitudinally through cartridge (37). In this example, the top surface (218) of the base platform (212) is further configured to slidably contact or otherwise engage a corresponding staple driver (43), thereby moving the wedge sled (210) longitudinally through the staples. Cartridges (37) vertically support respective staple drivers (43), as described in more detail below.

The base of this version also includes: a lower chamfer (222) that slopes upwardly and distally from the distal end of the bottom surface (216) to the distal end of the base platform (212); a pair of distal side upper chamfers (224), the pair of distal upper chamfers slope downwardly and distally from respective distal ends of the top surface (218) of the base platform (212) to the distal end of the base platform (212) and a pair of proximal upper chamfers (226) that slope downwardly and distally from respective distal ends of the top surface (220) of the raised platform (214) to the base platform corresponding top surface (218). The chamfers (222, 224, 226) may also be referred to as "tapered surfaces" or "bevels". Lower chamfer (222) may extend across the width of base platform (212) and may have a length greater than the thickness of base platform (212) (e.g., between bottom surface (216) and either top surface (218)) . Likewise, distal upper chamfers (224) may each have a length that is greater than the thickness of base platform (212). Lower chamfer (222) can be configured to facilitate wedge sled (210) in the position by reducing the possibility of the distal end of base platform (212) catching tray (74) or otherwise being blocked by the tray. Unimpeded longitudinal movement of the staple cartridge (37) in the distal direction. For example, when wedge sled (210) is driven distally through staple cartridge (37), lower chamfer (222) may push tray (74) (which may be constructed of a flexible material) downward slightly away from cartridge body (70) The bottom surface of the wall (71). Distal upper chamfer (224) can be configured to be able to lift nail driver (43) partially upward to the corresponding surface of base platform (212) when wedge-shaped sled (210) is driven distally through nail bin (37). The corresponding pegs (47) are driven through the corresponding peg holes (51 ) on the top surface (218) without being outwardly driven. For example, distal upper chamfer (224) can be configured to cammably engage staple drivers (43) to push staple drivers (43) onto respective top surfaces (218). Additionally or alternatively, distal upper chamfer (224) may be configured to warp the outer wall of cartridge body (70) ( 71) Lift up slightly onto the corresponding top surface (218) of the base platform (212). For example, distal upper chamfer (224) may be configured to cam-engage outer wall (71) to push outer wall (71) onto corresponding top surface (218), as described in more detail below. In some versions, any one or more of the chamfers (222, 224, 226) may be omitted. For example, any one or more of the chamfers (222, 224, 226) may be replaced by one or more corresponding fillets.

Wedge slide (210) also includes a pair of laterally opposed outer slide rails (230) extending upwardly from base platform (212), and laterally opposed pair of outer slide rails (230) extending upwardly from both base platform (212) and raised platform (214). first and second inner slide rails (232,233). The slider guides (230, 232, 233) may also be referred to as "cam ramps" or "cam wedges". The slider rails (230, 232, 233) of the present version extend substantially straight and upright from the respective top surfaces (218, 220) of the base platform (212) and raised platform (214) such that the slider rails (230, 232, 233) are perpendicular to the horizontal plane. oriented and parallel to the vertical-longitudinal plane. In the example shown, inner slider rails (232, 233) are laterally spaced from adjacent outer slider rails (230) to define a top surface (218) of base platform (212). In this regard, the top surfaces (218) of the base platforms (212) each extend at least partially along the length of the slider rails (230,232,233), and the top surfaces (220) of the raised platforms (214) each extend at least partially along the length of the slider rails (230,232,233). extend along the length of the respective inner slider rails (232, 233). Additionally, top surfaces (218) of base platform (212) are each positioned at least partially distally relative to distal ends of slider rails (230, 232, 233). The outer slider rails (230) of the present version each have a first height relative to the bottom surface (216) of the base platform (212), while the inner slider rails (232, 233) each have a first height relative to the bottom surface of the base platform (212) (216) A second height less than the first height. Also in the example shown, the outer and inner slider rails (230, 232, 233) each terminate proximally at the same longitudinal location (e.g., at the proximal end of the base platform (212)), while the outer slider rails ( 230) each terminate distally at a first longitudinal position, the first inner slide rail (232) terminates distally at a second longitudinal position distal relative to the first longitudinal position, and the second inner slide The rails (233) terminate distally at a third longitudinal position distal relative to the first and second longitudinal positions such that the outer slider rails (230) each have a first length and the first inner slider rails (232 ) has a second length greater than the first length, and the second inner slider track (233) has a third length greater than the first length and the second length. Thus, the distal ends of the outer slider rails (230) are longitudinally aligned with each other, and the distal ends of the first and second inner slider rails (232, 233) are longitudinally offset from each other and drawn from the outer The distal end of slider rail (230) is offset.

Each slider rail (230, 232, 233) is longitudinally aligned with a corresponding distal upper chamfer (224) of the base such that a corresponding top surface (218) of the base platform (212) is aligned between each slider rail (230, 232, 233) and a corresponding distal The upper chamfers (224) extend longitudinally between them. In some versions, the distal ends of the sled guides (230, 232, 233) may each be spaced apart from the corresponding distal upper chamfer (224) by a distance equal to or greater than the length of the corresponding staple driver (43), such that the corresponding top surface (218 ) may be capable of supporting a corresponding staple driver (43) in an upright manner between each sled rail (230, 232, 233) and the corresponding distal upper chamfer (224).

As best shown in Figure 13, the slider guides (230, 232, 233) are configured to be received within corresponding longitudinally extending slots (73) of the cartridge body (70) and are configured to slidably contact or otherwise Respective side surfaces of corresponding walls (71 ) of cartridge body (70) are engaged, thereby stabilizing walls (71 ) horizontally as wedge sled (210) moves longitudinally through cartridge (37). For example, outer and inner slider rails (230, 232, 233) can inhibit lateral inward and/or lateral outward deflection (eg, bending) of wall (71). In this regard, the slider guides (230, 232, 233) may each have a thickness equal to or slightly less than the width of the corresponding slot (73). In some versions, the slider guides (230, 232, 233) may additionally or alternatively be configured to slidably contact or otherwise engage respective upper slot surfaces of corresponding slots (73) of the cartridge body (70), Upper deck (72) is thereby supported vertically as wedge sled (210) moves longitudinally through staple cartridge (37).

Each sled track (230, 232, 233) of wedge sled (210) presents one or more corresponding ramped cam surfaces (240, 242, 244, 245, 246, 247) for use as wedge sled (210) is driven distally through staple cartridge (37) Lift the staple driver (43) fully upward to drive the corresponding staple (47) outward through the corresponding staple hole (51). In the example shown, each outer slider rail (230) includes a front cam surface (240) oriented at a first angle relative to a horizontal plane defined by bottom surface (216) and a second angled relative to the horizontal plane. The rear cam surfaces (242) are oriented such that the outer slider rails (230) have the same side elevation profile as one another. Likewise, the first and second inner slider rails (232, 233) each include a front cam surface (244, 245) oriented at a first angle relative to a horizontal plane. In the example shown, the first inner slider rail (232) includes a rear cam surface (246) oriented at a third angle relative to the horizontal plane, and the second inner slider rail (233) includes a rear cam surface (246) oriented at a third angle relative to the horizontal plane. The rear cam surface (247) is oriented at a fourth angle such that the inner slider rails (232, 233) have an elevational profile that differs from each other and from the elevational profile of the outer slider rail (230). Thus, the wedge slide (210) may be substantially asymmetric about the vertical-longitudinal plane (at least with respect to the configuration of the slide rails (230, 232, 233)).

In this variation, the first angle is greater than the second angle, the second angle is greater than the third angle, and the third angle is greater than the fourth angle. Alternatively, any other suitable relative angle may be used.

Wedge sled (210) also includes a wedge extending upwardly from both base platform (212) and raised platform (214) between inner sled rails (232, 233) and also extending distally to distally from raised platform (214). Center nose (250) of side tips (252). In the example shown, a central nose (250) is laterally spaced from each inner slider rail (232, 233) to define a top surface (220) of the raised platform (214). More specifically, the central nose (250) is equidistantly spaced from the inner slider rails (232, 233). Central nose (250) of the present version includes lower portion (254) extending distally from raised platform (214) to distal tip (252), and or an upwardly extending upper portion (256). The upper portion (256) of this version is substantially perpendicular to the horizontal plane. As shown, upper portion (256) extends longitudinally from the proximal end of raised platform (214) to distal tip (252) such that upper portion (256) is at least partially relative to the direction of slider rails (230, 232, 233). The distal end is positioned distally such that the upper portion (256) extends at least partially along the length of each slider rail (230, 232, 233). The distal tip (252) of this version is positioned at the same longitudinal location as the distal end of the base platform (212).

In the example shown, lower portion (254) extends laterally outward relative to upper portion (256) on opposite sides of upper portion (256) to define a direction from a corresponding top surface (220) of raised platform (214). The distal tip (252) extends longitudinally with a pair of transversely opposing upwardly facing flange surfaces (262). More specifically, flange surface (262) is substantially planar, parallel to a horizontal plane, and is positioned relative to bottom surface (216) at the same height as top surface (220) of raised platform (214) such that Flange surface (262) seamlessly adjoins corresponding top surface (220) of raised platform (214) to collectively define a corresponding single continuous surface. As shown, each flange surface (262) is positioned at least partially distally relative to the distal end of the slider rail (230, 232, 233). Central nose portion (250) of the present version also includes a pair of laterally opposing distally tapered surfaces ( 263). Tapered surface (263) may be configured to lift inner wall (71) of cartridge body (70) slightly upward to central nose (250) as wedge sled (210) is driven distally through staple cartridge (37). ) on the corresponding flange surface (262). For example, tapered surface (263) may be configured to cam engage inner wall (71) to push inner wall (71) onto a corresponding flange surface (262), as described in more detail below. In some versions, any one or more of tapered surfaces (263) may be omitted. For example, any one or more of the tapered surfaces (263) may be replaced by one or more corresponding fillets.

As best shown in Figure 13, central nose (250) is configured to be at least partially received within vertical slot (49) of staple cartridge (37). In some versions, central nose (250) is configured to slidably contact or otherwise engage inner wall (71) of cartridge body (70), thereby moving longitudinally through wedge sled (210) through the staple cartridge ( 37) supports vertically and/or stabilizes the inner wall (71) horizontally. In this regard, flange surface (262) of the present version faces and slidably contacts or otherwise engages a corresponding lower surface of inner wall (71), thereby moving longitudinally through the staple cartridge as wedge-shaped sled (210) (37) supports the inner wall (71) vertically. Additionally, upper portion (256) of the present version contacts or otherwise engages the laterally inward surface of inner wall (71), thereby horizontally stabilizing inner wall (71) as wedge sled (210) moves longitudinally through staple cartridge (37). ). For example, upper portion (256) may inhibit lateral inward deflection (eg, bending) of inner wall (71). In this regard, upper portion (256) may have a thickness equal to or slightly less than the width of vertical slot (49), while lower portion (254) may have a thickness greater than the width of vertical slot (49).

Since each top surface (218) of base platform (212) is at least partially positioned distally relative to the distal ends of sled rails (230, 232, 233), when wedge-shaped sled rail (210) moves longitudinally through the staple cartridge ( 37), the top surface (218) can vertically support the staple drivers (43) and/or outer wall (71) of the cartridge body (70) in a distal longitudinal position relative to the slider rails (230, 232, 233). In this way, the base platform is closed before (e.g., at least immediately before) the corresponding staple driver (43) by the corresponding slider rail (230, 232, 233) to fully lift the corresponding staple driver (43) to drive the corresponding staple (47) outwardly through the staple hole (51 ). (212) may provide vertical support to staple drivers (43) and/or cartridge body (70) along the length of cartridge body (70) at longitudinal positions corresponding to each staple hole (51). By providing vertical support to the cartridge body (70) at such longitudinal positions before fully lifting the staple drivers (43) to drive the staples (47) outwardly through the staple holes (51) at such longitudinal positions, during deployment and Prior to forming each staple (47), base platform (212) may facilitate proper alignment of each staple hole (51) with a corresponding staple forming pocket (53) on the inner surface of anvil (18). For example, the base platform (212) can facilitate the alignment of each staple hole (51) with the corresponding staple formation by assisting in maintaining the upper platform (72) substantially parallel to the inner surface of the anvil (18) having the staple forming pocket (53). Vertical and/or angular alignment of dimples (53). Likewise, by providing vertical support to the staple drivers (43) at such longitudinal positions before fully lifting the staple drivers (43) to drive the staples (47) outwardly through the staple holes (51 ) at such longitudinal positions, Base platform (212) can facilitate proper alignment of each staple driver (43) with a corresponding staple forming pocket (53) on the interior surface of anvil (18) prior to deployment and forming of each staple (47). For example, the base platform (212) can be oriented substantially vertically with respect to the inner surface of the anvil (18) having the staple forming pockets (53) by assisting in maintaining each staple driver (43), such as by inhibiting The front camming surfaces (240, 244, 245) of the sled rails (230, 232, 233) facilitate alignment of each staple driver (43) with the corresponding staple forming pocket ( 53) vertical and/or angular alignment.

Similarly, since each flange surface (262) of central nose (250) is at least partially positioned distally relative to the distal ends of slider rails (230, 232, 233), when wedge-shaped slider (210) moves longitudinally Flange surface (262) may support inner wall (71) of cartridge body (70) vertically in a distal longitudinal position relative to sled rails (230, 232, 233) as cartridge (37) passes. Likewise, because upper portion (256) is at least partially positioned distally relative to the distal ends of sled rails (230, 232, 233), when wedge-shaped sled (210) moves longitudinally through cartridge (37), the upper portion (256) can stabilize the inner wall (71) of the cartridge body (70) horizontally in a distal longitudinal position relative to the slider rails (230, 232, 233). In this manner, the central nose will be positioned before (e.g., at least immediately prior to) the corresponding staple driver (43) fully lifted by the corresponding slider rail (230, 232, 233) to drive the corresponding staple (47) outwardly through the staple hole (51 ). Portions (250) may provide vertical support and/or horizontal stability to the cartridge body (70) along the length of the cartridge body (70) at longitudinal locations corresponding to each staple hole (51). By providing vertical support and/or horizontal support to the cartridge body (70) at such longitudinal positions before fully lifting the staple drivers (43) to drive the staples (47) outwardly through the staple holes (51) at such longitudinal positions Stability, prior to deploying and forming each staple (47), the central nose (250) facilitates alignment of each staple hole (51) with the corresponding staple forming pocket (53) on the inner surface of the anvil (18). Align properly. For example, the central nose (250) can be used by assisting in maintaining the upper platform (72) substantially parallel to the inner surface of the anvil (18) having the staple forming pocket (53) and/or by inhibiting what would otherwise result in the staple hole (51). ) relative to the corresponding staple forming pocket (53) angled (e.g., laterally inward or laterally outward) of the inner wall (71) to facilitate the alignment of each staple hole (51) with the corresponding staple forming pocket (53) vertical and/or angular alignment.

Furthermore, since the top surfaces (218, 220) of the base platform (212) and the raised platform (214) each extend at least partially along the length of a corresponding slider track (230, 232, 233), the top surfaces (218, 220) can hold the cartridge body (70 ) is vertically supported at the same longitudinal position where the sled guides (230, 232, 233) are located when the wedge-shaped sled (210) moves longitudinally through the staple cartridge (37). In this manner, the corresponding staple driver (43) is fully lifted by the corresponding sled rail (230, 232, 233) to drive the corresponding staple (47) outwardly through the staple hole (51) substantially simultaneously (e.g., during at least a portion of its duration ), the base platform (212) and/or the raised platform (214) can provide vertical support to the warehouse body (70) along the length of the warehouse body (70) at a longitudinal position corresponding to each nail hole (51) . By providing vertical support to the cartridge body (70) at such longitudinal positions substantially simultaneously with fully lifting the staple drivers (43) to drive the staples (47) outwardly through the staple holes (51 ) at such longitudinal positions, As each staple (47) is deployed and formed, the base platform (212) and/or raised platform (214) can facilitate the alignment of each staple hole (51) with the corresponding staple forming recess on the inner surface of the anvil (18). Proper alignment of the pit (53). For example, the base platform (212) and/or the raised platform (214) can facilitate each abutment by assisting in maintaining the upper platform (72) substantially parallel to the inner surface of the anvil (18) with the staple forming pockets (53). The staple holes (51 ) are vertically and/or angularly aligned with the corresponding staple forming pockets (53). Since the top surface (220) of the raised platform (214) adjoins the corresponding flange surface (262) seamlessly, the central nose (250) and raised platform (214) can cooperatively facilitate each nail hole (51 ) with corresponding staple forming pockets (53) on the inner surface of the anvil (18) from at least immediately prior to deploying and forming each staple (47) to the completion of the deployment and forming of each staple (47). allow.

In addition, because the upper portion (256) of the central nose (250) extends at least partially along the length of each slider track (230, 232, 233), the upper portion (256) can engage the wall (71) of the cartridge body (70). Stabilized horizontally at the same longitudinal position that sled guides (230, 232, 233) are in when wedge sled (210) moves longitudinally through cartridge (37). In this manner, the corresponding staple driver (43) is fully lifted by the corresponding sled rail (230, 232, 233) to drive the corresponding staple (47) outwardly through the staple hole (51) substantially simultaneously (e.g., during at least a portion of its duration ), the central nose (250) can provide horizontal stability to the cartridge body (70) along the length of the cartridge body (70) at a longitudinal position corresponding to each nail hole (51). By providing horizontal stability to the cartridge body (70) at such longitudinal positions substantially simultaneously with fully lifting the staple drivers (43) to drive staples (47) outwardly through the staple holes (51 ) at such longitudinal positions, While deploying and forming each staple (47), the central nose (250) can facilitate proper alignment of each staple hole (51) with the corresponding staple forming pocket (53) on the inner surface of the anvil (18). allow. For example, the central nose (250) can act by inhibiting lateral deflection of the inner wall (71) that would otherwise cause the staple hole (51) to be angled (e.g., laterally inward or laterally outward) relative to the corresponding staple forming pocket (53). to facilitate vertical and/or angular alignment of each staple hole (51) with the corresponding staple forming pocket (53). As discussed above, the slider guides (230, 232, 233) themselves can horizontally stabilize the corresponding walls (71) of the cartridge body (70) in their respective longitudinal positions, and thus also by inhibiting the Lateral deflection of the inner wall (71) that is angled (e.g., laterally inward or laterally outward) to the corresponding staple forming pocket (53) to facilitate vertical alignment of each staple hole (51) with the corresponding staple forming pocket (53) and/or angular alignment. Accordingly, as wedge sled (210) moves longitudinally through staple cartridge (37), central nose (250) and sled rails (230, 232, 233) can cooperatively move toward each other at the respective longitudinal positions of each sled rail (230, 232, 233). The cartridge body (70) provides horizontal stability. It should be understood that the anvil ( 18 ) has been intentionally omitted from the view of FIG. 13 .

Wedge slide (210) may be formed from any suitable material or combination of materials, including, but not limited to, metallic materials such as stainless steel (eg, hardened stainless steel) or titanium. In some versions, wedge slide (210) may be manufactured via a metal injection molding (MIM) process. It should be appreciated that such a MIM process may provide improved compressive support and less lateral deflection to wedge sled (210), and may enable wedge sled (210) to Provides improved stiffness to staple cartridge (37). For example, such a MIM process may include molding the wedge slide (210) as a single monolithic piece by mixing liquid MIM feedstock of metal powder and binder. The MIM process may also include subjecting the wedge slide (210) to various types of conditioning including, but not limited to, cleaning, thermal debonding, and/or sintering.

In any event, after the MIM process is complete, all surfaces of wedge sled (210) may have an initial (e.g., raw MIM) surface finish, including top surface (218) of base platform (212), distal upper chamfer (224) and cam surfaces (240,242,244,245,246,247) of slider guides (230,232,233). Such an initial surface finish may be rough, abrasive, and/or grainy, and may generally resemble the texture of pitted sandpaper. Accordingly, the selected surface of the wedge slide (210) can be further adjusted to remove the initial surface finish from the selected surface and provide the selected surface with a final surface finish that is relatively smoother (e.g., finer, more polished) than the initial surface finish. surface finish. For example, the top surface (218) of the base platform (212), the distal upper chamfer (224), and the cam surfaces (240, 242, 244, 245, 246, 247) of the slider rails (230, 232, 233) can be The chamfers ( 224 ) and cam surfaces ( 240 , 242 , 244 , 245 , 246 , 247 ) remove the initial surface finish and provide such final surface finish to the top surface ( 218 ), distal upper chamfer ( 224 ) and cam surfaces ( 240 , 242 , 244 , 245 , 246 , 247 ). The final surface finish of the top surface (218), distal upper chamfer (224) and cam surfaces (240, 242, 244, 245, 246, 247) facilitates contact of the top surface (218), distal upper chamfer (224) and cam surfaces (240, 242, 244, 245, 246, 247) with the staple drivers ( 43) and thereby minimize the portion of staple driver (43) that is contacted by top surface (218), distal upper chamfer (224) and cam surfaces (240, 242, 244, 245, 246, 247) wear and tear.

While selected surfaces provided with a final surface finish have been described in terms of the top surface (218) of the base platform (212), the distal upper chamfer (224) and the cam surfaces (240, 242, 244, 245, 246, 247) of the slider rails (230, 232, 233), It should be understood, however, that any other surface of wedge slide (210) may additionally or alternatively be provided with a final surface finish. For example, bottom surface (216) may be provided with a final surface finish to promote reduced friction and smooth interaction between bottom surface (216) and tray (74).

In some versions, the remaining non-selected surfaces of wedge sled (210) may not be further adjusted such that the initial surface finish may remain on the non-selected surfaces during use (eg, clamping and/or firing). For example, the top surface (220) of the raised platform (214) and/or the flange surface (262) of the central nose (250) may retain the original surface finish. As another example, in addition to the top surface (218) of the base platform (212), the distal upper chamfer (224), and the cam surfaces (240, 242, 244, 245, 246, 247) of the sled rails (230, 232, 233), each of the wedge sleds (210) The surface maintains the original surface finish. Accordingly, selected surfaces of wedge slide (210) may have a final surface finish, while non-selected surfaces of wedge slide (210) may have an initial surface finish such that wedge slide (210) may have at least two different surfaces finish.

Selected and non-selected surfaces may be determined based on specific components of cartridge (37) and/or firing beam (14) that interact with each individual surface of wedge sled (210). In this regard, the final surface finish may be more desirable for surfaces of wedge sled (210) that interact with certain predetermined components of cartridge (37) and/or firing beam (14) than other surfaces. For example, the top surface (218) of the base platform (212), the distal upper chamfer (224), and the camming surfaces (240, 242, 244, 245, 246, 247) of the sled rails (230, 232, 233) may be selected based on their interaction with the staple drivers (43) to receive the final surface finish, while the remaining surfaces of the slider guides (230, 232, 233), the top surface (220) of the raised platform (214), and/or the flange surface (262) of the center nose (250) can be based on their relationship with the cartridge The interaction of the body (70) is not selected to receive the final surface finish. As another example, bottom surface (216) may be selected to receive a final surface finish based on its interaction with tray (74), while the proximal end surface of wedge-shaped slide (210) may be selected based on its interaction with push block ( 80) are not selected to receive the final surface finish.

Referring now to FIGS. 14A-14D , during firing, wedge sled ( 210 ) is driven distally from the proximal position shown in FIG. 14A into upward camming contact with staple driver ( 43 ), which in turn outwards. The nails (47) are driven through the nail holes (51) and into contact with the nail forming pockets (53) on the inner surface of the anvil (18). More specifically, the distal upper chamfer (224) of the base platform (212) cams the corresponding staple driver (43) during distal translation of the wedge sled (210) to lift the corresponding staple driver (43) to higher than the tray (74), as shown in Figure 14B. For example, the distal upper chamfer (224) can lift the corresponding staple driver (43) to a first height on the corresponding top surface (218) of the base platform (212) without passing the corresponding staple (47) through the corresponding staple hole ( 51) Shoot out. Thus, distal upper chamfer (224) may be considered to "partially" lift the corresponding staple driver (43). As shown in FIG. 14C , top surface ( 218 ) then vertically supports the respective staple driver ( 43 ) during continued distal translation of wedge sled ( 210 ). For example, top surface (218) may temporarily hold corresponding staple driver (43) at the first height. Then, the camming surfaces (240, 242, 244, 245, 246, 247) of the respective sled rails (230, 232) cammingly engage the respective staple drivers (43) during further distal translation of the wedge-shaped sled rails (210) to lift the respective staple drivers (43) to high on the corresponding top surface (218) of the base platform (212), as shown in Figure 14D. For example, the camming surfaces (240, 242, 244, 245, 246, 247) can raise the corresponding staple driver (43) to a second height greater than the first height to eject the corresponding staple (47) through the corresponding staple hole (51) and contact the corresponding staple forming pocket (53) Make contact. Thus, the camming surfaces (240, 242, 244, 245, 246, 247) may be considered to "fully" lift the corresponding staple driver (43). It should also be understood that the staple forming pockets (53) have been intentionally omitted from the views in Figures 14A-14D.

IV. Exemplary Slides with Cartridge Biasing Features

In some cases, it may be desirable to provide a wedge sled configured to provide further horizontal stability to the staple cartridge (37) by laterally inwardly biasing the wall of the cartridge body (70) adjacent the wedge sled. sex. Figures 15-19 illustrate exemplary wedge slides (310, 410, 510, 610, 710) each providing such functionality. Wedge slides (310, 410, 510, 610, 710) are each similar to wedge slides (110) and/or wedge slides (210) described above unless otherwise described below. For example, wedge sleds (310, 410, 510, 610, 710) each occupy the same amount of space longitudinally within staple cartridge (37) as wedge sleds (41, 110, 210), thereby rendering wedge sleds (310, 410, 510, 610, 710) substantially interchangeable with wedge sleds (41, 110, 210) .

A. Exemplary Slides with Inner and Outer Slider Rails and Undercuts with Inverted Fronts

Figure 15 shows an exemplary wedge slide (310) comprising a base including a base platform (312) and a central raised platform (314) extending upwardly from the base platform (312). In the example shown, base platform (312) has a substantially planar bottom surface (316) that defines a horizontal plane and is configured to enable the wedge sled (310) to move longitudinally through staple cartridge (37). Slide along the tray (74) lengthwise. Base platform (312) also has a pair of laterally opposed substantially planar top surfaces (318) parallel to bottom surface (316), and raised platform (314) similarly has laterally opposed pairs parallel to bottom surface (316). A pair of substantially planar top surfaces (320). As shown, the top surfaces (318, 320) are configured to face and/or slidably contact or otherwise engage a corresponding bottom surface of a corresponding wall (71) of the cartridge body (70), whereby the wedge-shaped slide (310) vertically supports the corresponding wall (71) as it moves longitudinally through the staple cartridge (37).

Wedge slide (310) also includes a pair of laterally opposed outer slide rails (330) extending upwardly from base platform (312), and laterally opposed pair of outer slide rails (330) extending upwardly from both base platform (312) and raised platform (314). A pair of inner slide rails (332). The slider guides (330, 332) may also be referred to as "cam ramps" or "cam wedges". The slider guides (330, 332) of this version are each sloped or curved laterally inwardly from the respective top surfaces (318, 320) of the base platform (312) and raised platform (314) so that the slider guides (330, 332) are relative to the horizontal plane and opposite Oriented obliquely in the vertical-longitudinal plane. More specifically, each slider guide (330, 332) is curved laterally inwardly at the same angle of inclination (α) with respect to the vertical-longitudinal plane (or with respect to any plane parallel thereto), such that each vertical-longitudinal plane The slider rails (330, 332) on the sides are parallel to each other and make the wedge-shaped slider rail (310) substantially symmetrical about the vertical-longitudinal plane (at least with respect to the configuration of the slider rails (330, 332)). In some versions, the angle of inclination (α) may be about 7.5°. Alternatively, any other suitable angle may be used. In the example shown, wedge slide (310) includes a pair of laterally opposing recesses (334) extending downwardly from the top surface (320) of raised platform (314) adjacent to corresponding inner slide rails (332) To help facilitate the laterally inwardly curved configuration of the inner slider rail (332). The recess (334) may also be referred to as an "undercut". In some versions, recesses (334) may each extend at least partially along the length of a respective inner slider rail (332).

As shown, the slider guides (330, 332) are configured to be received within corresponding longitudinally extending slots (73) of the cartridge body (70) and configured to slidably contact or otherwise engage the cartridge body A corresponding side surface of ( 70 ) corresponds to wall ( 71 ), thereby horizontally stabilizing wall ( 71 ) as wedge sled ( 310 ) moves longitudinally through cartridge ( 37 ). For example, outer and inner slider rails (330, 332) may inhibit lateral inward and/or lateral outward deflection (eg, bending) of wall (71). In this regard, the laterally inwardly curved configuration of the slider guides (330, 332) of this version may be particularly suited to inhibiting laterally outward deflection of the wall (71). For example, slider guides (330, 332) of the present type may direct the corresponding wall (71) toward substantially on the vertical orientation bias. In this regard, the angle of inclination (α) can be selected to achieve a desired amount of laterally inwardly directed force applied by each slider rail (330, 332) to the corresponding wall (71), which It is sufficient to overcome such laterally outwardly directed forces while causing limited or no laterally inwardly bending of the corresponding wall (71). Likewise, slider rails (330, 332) may each be attached to base platform (312) and raised platform (314) with a predetermined amount of flexibility, respectively, by allowing slider rails (330, 332) to be laterally moved when a threshold force is applied thereto. The outward elastic push minimizes the lateral inward bending of the corresponding wall (71). Accordingly, slider guides (330, 332) may be considered to be resiliently biased laterally inward. In some versions, the slider guides (330, 332) may additionally or alternatively be configured to slidably contact or otherwise engage respective upper slot surfaces of corresponding slots (73) of the cartridge body (70), Upper deck (72) is thereby supported vertically as wedge sled (310) moves longitudinally through staple cartridge (37).

Wedge slide (310) also includes a central nose (350) extending upwardly from raised platform (314) between inner slide rails (332). In the example shown, central nose (350) is laterally spaced from each recess (334) to define top surface (320) of raised platform (314).

As shown, central nose (350) is configured to be at least partially received within vertical slot (49) of staple cartridge (37). In some versions, central nose (350) is configured to slidably contact or otherwise engage inner wall (71) of cartridge body (70), thereby moving longitudinally through wedge sled (310) through the staple cartridge ( 37) vertically supports and/or horizontally stabilizes the inner wall (71 ), as described above with respect to the central nose (150, 250). For example, central nose (350) may inhibit lateral inward deflection (e.g., bending) of inner wall (71) that would otherwise be caused by a laterally inwardly directed force applied to inner wall (71) by corresponding inner slider rail (332) . Likewise, the inner slider rails (332) can inhibit lateral inward deflection of the outer wall (71) that would otherwise be induced by a laterally inwardly directed force applied to the outer wall (71) by the corresponding outer slider rail (330) (e.g., bending). In some versions, some lateral inward deflection of the inner and/or outer walls (71) may be permitted without deforming the overall outer shape of the staple cartridge (37), and more specifically, without causing a staple hole ( 51) Misalignment relative to corresponding staple forming pockets (53). Accordingly, as wedge sled (310) moves longitudinally through staple cartridge (37), central nose (350) and sled rails (330, 332) can cooperatively move toward each other at the respective longitudinal positions of each sled rail (330, 332). The cartridge body (70) provides improved horizontal stability. It should be understood that the anvil ( 18 ) has been intentionally omitted from the view of FIG. 15 .

B. Exemplary Slides with Inner and Outer Slider Rails with Inward-Tipped Fronts

Figure 16 shows an exemplary wedge-shaped slide (410) comprising a base including a base platform (412) and a central raised platform (414) extending upwardly from the base platform (412). In the example shown, base platform (412) has a substantially planar bottom surface (416) that defines a horizontal plane and is configured to enable a wedge sled (410) to move longitudinally through staple cartridge (37). Slide along the tray (74) lengthwise. Base platform (412) also has a pair of laterally opposed substantially planar top surfaces (418) parallel to bottom surface (416), and raised platform (414) similarly has laterally opposed pairs parallel to bottom surface (416). A pair of substantially planar top surfaces (420). As shown, the top surfaces (418, 420) are configured to face and/or slidably contact or otherwise engage a corresponding bottom surface of a corresponding wall (71) of the cartridge body (70), whereby the wedge-shaped slide (410) vertically supports the corresponding wall (71) as it moves longitudinally through the staple cartridge (37).

Wedge slide (410) also includes a pair of laterally opposed outer slide rails (430) extending upwardly from base platform (412), and laterally opposed pair of outer slide rails (430) extending upwardly from both base platform (412) and raised platform (414). A pair of inner slide rails (432). The slider guides (430, 432) may also be referred to as "cam ramps" or "cam wedges". Slider rails (430, 432) of the present version are each sloped or curved laterally inwardly from respective top surfaces (418, 420) of base platform (412) and raised platform (414) such that slider rails (430, 432) are relative to a horizontal plane and opposite to each other. Oriented obliquely in the vertical-longitudinal plane. More specifically, each slider guide (430, 432) is curved laterally inward at the same angle of inclination (α) with respect to the vertical-longitudinal plane (or with respect to any plane parallel thereto), such that each vertical-longitudinal plane The slider rails (430, 432) on the sides are parallel to each other and make the wedge-shaped slider rail (410) substantially symmetrical about the vertical-longitudinal plane (at least with respect to the configuration of the slider rails (430, 432)). In some versions, the angle of inclination (α) may be about 7.5°. Alternatively, any other suitable angle may be used.

As shown, the slider guides (430, 432) are configured to be received within corresponding longitudinally extending slots (73) of the cartridge body (70) and configured to slidably contact or otherwise engage the cartridge body A corresponding side surface of ( 70 ) corresponds to wall ( 71 ), thereby horizontally stabilizing wall ( 71 ) as wedge sled ( 410 ) moves longitudinally through cartridge ( 37 ). For example, outer and inner slider rails (430, 432) can inhibit lateral inward and/or lateral outward deflection (eg, bending) of wall (71). In this regard, the laterally inwardly curved configuration of the slider guides (430, 432) of this version may be particularly suited to inhibiting laterally outward deflection of the wall (71). For example, slider guides (430, 432) of the present type can direct the corresponding wall (71) toward substantially on the vertical orientation bias. In this regard, the angle of inclination (α) can be selected to achieve a desired amount of laterally inwardly directed force applied by each slider rail (430, 432) to the corresponding wall (71), which It is sufficient to overcome such laterally outwardly directed forces while causing limited or no laterally inwardly bending of the corresponding wall (71). Likewise, slider rails (430, 432) may each be attached to base platform (412) and raised platform (414) with a predetermined amount of flexibility, respectively, by allowing slider rails (430, 432) to be laterally moved when a threshold force is applied thereto. The outward elastic push minimizes the lateral inward bending of the corresponding wall (71). Accordingly, slider guides (430, 432) may be considered to be resiliently biased laterally inward. In some versions, the slider guides (430, 432) may additionally or alternatively be configured to slidably contact or otherwise engage respective upper slot surfaces of corresponding slots (73) of the cartridge body (70), Upper deck (72) is thereby supported vertically as wedge sled (410) moves longitudinally through staple cartridge (37).

Wedge slide (410) also includes a central nose (450) extending upwardly from raised platform (414) between inner slide rails (432). In the example shown, central nose (450) is laterally spaced from each inner slider rail (432) to define a top surface (420) of raised platform (414). More specifically, central nose (450) is equally spaced from inner slider rail (432).

As shown, central nose (450) is configured to be at least partially received within vertical slot (49) of staple cartridge (37). In some versions, central nose (450) is configured to slidably contact or otherwise engage inner wall (71) of cartridge body (70), thereby moving longitudinally through wedge sled (410) through the staple cartridge ( 37) vertically supports and/or horizontally stabilizes the inner wall (71 ), as described above with respect to the central nose (150, 250). For example, the central nose (450) may inhibit lateral inward deflection (e.g., bending) of the inner wall (71) that would otherwise be caused by a laterally inwardly directed force applied to the inner wall (71) by the corresponding inner slider rail (432) . Likewise, the inner slider rails (432) can inhibit lateral inward deflection of the outer wall (71) that would otherwise be induced by a laterally inwardly directed force applied to the outer wall (71) by the corresponding outer slider rail (430) (e.g., bending). In some versions, some lateral inward deflection of the inner and/or outer walls (71) may be permitted without deforming the overall outer shape of the staple cartridge (37), and more specifically, without causing a staple hole ( 51) Misalignment relative to corresponding staple forming pockets (53). Accordingly, as wedge sled (410) moves longitudinally through staple cartridge (37), central nose (450) and sled rails (430, 432) can cooperatively move toward each other at the respective longitudinal positions of each sled rail (430, 432). The cartridge body (70) provides improved horizontal stability. It should be understood that the anvil ( 18 ) has been intentionally omitted from the view of FIG. 16 .

C. Exemplary Slider with Inner Slider Rails with Inverted Fronts

Figure 17 shows an exemplary wedge slide (510) comprising a base including a base platform (512) and a central raised platform (514) extending upwardly from the base platform (512). In the example shown, base platform (512) has a substantially planar bottom surface (516) that defines a horizontal plane and is configured to enable the wedge sled (510) to move longitudinally through staple cartridge (37). Slide along the tray (74) lengthwise. Base platform (512) also has a pair of laterally opposed substantially planar top surfaces (518) parallel to bottom surface (516), and raised platform (514) similarly has laterally opposed pairs parallel to bottom surface (516). A pair of substantially planar top surfaces (520). As shown, the top surfaces (518, 520) are configured to face and/or slidably contact or otherwise engage a corresponding bottom surface of a corresponding wall (71) of the cartridge body (70), whereby the wedge-shaped slide (510) vertically supports the corresponding wall (71) as it moves longitudinally through the staple cartridge (37).

Wedge slide (510) also includes a pair of laterally opposed outer slide rails (530) extending upwardly from base platform (512), and laterally opposed pair of outer slide rails (530) extending upwardly from both base platform (512) and raised platform (514). A pair of inner slide rails (532). The slider guides (530, 532) may also be referred to as "cam ramps" or "cam wedges". The outer slider rails (530) of the present version extend substantially straight and upright from the corresponding top surface (518) of the base platform (512) such that the outer slider rails (530) are oriented perpendicular to the horizontal plane and parallel to the vertical plane. Straight - longitudinal plane. The inner slide rails (532) of the present version each slope or curve laterally inwardly from the corresponding top surface (520) of the raised platform (514) such that the inner slide rails (532) are relative to the horizontal plane and relative to the vertical- The longitudinal plane is oriented obliquely. More specifically, each inner slider rail (532) is curved laterally inwardly at an angle of inclination (α) with respect to the vertical-longitudinal plane (or with respect to any plane parallel thereto) such that each inner slider rail (532) Oriented obliquely relative to adjacent outer slider rails (530) and such that wedge-shaped slider rails (510) are substantially symmetrical about a vertical-longitudinal plane (at least relative to the configuration of slider rails (530, 532)). In some versions, the angle of inclination (α) may be about 7.5°. Alternatively, any other suitable angle may be used.

As shown, the slider guides (530, 532) are configured to be received within corresponding longitudinally extending slots (73) of the cartridge body (70) and configured to slidably contact or otherwise engage the cartridge body A corresponding side surface of ( 70 ) corresponds to wall ( 71 ), thereby horizontally stabilizing wall ( 71 ) as wedge sled ( 510 ) moves longitudinally through cartridge ( 37 ). For example, outer and inner slider rails (530, 532) can inhibit lateral inward and/or lateral outward deflection (eg, bending) of wall (71). In this regard, the laterally inwardly curved configuration of the present version of the inner slider rail (532) may be particularly suitable for inhibiting laterally outward deflection of the inner wall (71). For example, inner slider rails (532) of the present version can orient the corresponding inner wall (71) toward The bias is substantially vertically oriented. In this regard, the angle of inclination (α) can be selected to achieve a desired amount of laterally inwardly directed force applied by each inner slider rail (532) to the corresponding inner wall (71), the desired amount of laterally inwardly directed The force is sufficient to overcome such laterally outwardly directed force while causing limited or no laterally inward bending of the corresponding wall (71). Likewise, inner slider rails (532) may each be attached to raised platform (514) with a predetermined amount of flexibility to allow inner slider rails (532) to be resiliently urged laterally outward upon application of a threshold force thereto. The lateral inward bending of the corresponding wall (71) is minimized. Thus, the inner slide rail (532) may be considered to be resiliently biased laterally inward. In some versions, the slider guides (530, 532) may additionally or alternatively be configured to slidably contact or otherwise engage respective upper slot surfaces of corresponding slots (73) of the cartridge body (70), Upper deck (72) is thereby supported vertically as wedge sled (510) moves longitudinally through staple cartridge (37).

Wedge slide (510) also includes a central nose (550) extending upwardly from raised platform (514) between inner slide rails (532). In the example shown, central nose (550) is laterally spaced from each inner slider rail (532) to define top surface (520) of raised platform (514). More specifically, central nose (550) is equally spaced from inner slider rail (532).

As shown, central nose (550) is configured to be at least partially received within vertical slot (49) of staple cartridge (37). In some versions, central nose (550) is configured to slidably contact or otherwise engage inner wall (71) of cartridge body (70), thereby moving longitudinally through wedge sled (510) through the staple cartridge ( 37) vertically supports and/or horizontally stabilizes the inner wall (71 ), as described above with respect to the central nose (150, 250). For example, the central nose (550) may inhibit lateral inward deflection (e.g., bending) of the inner wall (71) that would otherwise be caused by a laterally inwardly directed force applied to the inner wall (71) by the corresponding inner slider rail (532) . Likewise, the inner slider rails (532) can inhibit lateral inward deflection of the outer wall (71) that would otherwise be induced by a laterally inwardly directed force applied to the outer wall (71) by the corresponding outer slider rail (530) (e.g., bending). In some versions, some lateral inward deflection of the inner and/or outer walls (71) may be permitted without deforming the overall outer shape of the staple cartridge (37), and more specifically, without causing a staple hole ( 51) Misalignment relative to corresponding staple forming pockets (53). Accordingly, as wedge sled (510) moves longitudinally through staple cartridge (37), central nose (550) and sled rails (530, 532) can cooperatively move toward each other at the respective longitudinal positions of each sled rail (530, 532). The cartridge body (70) provides improved horizontal stability. It should be understood that the anvil ( 18 ) has been intentionally omitted from the view of FIG. 17 .

D. Exemplary slider with V-shaped base

Figure 18 shows an exemplary wedge slide (610) comprising a base including a base platform (612) and a central raised platform (614) extending upwardly from the base platform (612). In the example shown, base platform (612) and raised platform (614) are each bifurcated by a longitudinally extending inverted V-shaped slot (615) such that laterally opposite halves of wedge-shaped slide 610 can each be laterally directed towards each other. Slope or curve inward. In this regard, the base platform (612) has a pair of laterally opposing substantially planar bottom surfaces (616) oriented obliquely relative to a horizontal plane (eg, collectively defined by the lowest laterally inner edges of the bottom surface (616)). More specifically, each bottom surface (616) is curved laterally inwardly at the same angle of inclination (θ) with respect to the horizontal plane, such that the base platform (612) has a substantially V-shaped cross-section, and such that the wedge-shaped slide (610) It is substantially symmetrical about the vertical-longitudinal plane (at least with respect to the configuration of the bottom surface (616)). The base platform (612) also has a pair of laterally opposed substantially planar top surfaces (618) parallel to respective bottom surfaces (616), and the raised platform (614) similarly has a pair of laterally opposite bottom surfaces (616) parallel to them. A pair of laterally opposing substantially planar top surfaces (620). The top surfaces (618, 620) are configured to face and/or slidably contact or otherwise engage a corresponding bottom surface of a corresponding wall (71) of the cartridge body (70), thereby moving longitudinally in the wedge-shaped slide (610) The corresponding wall (71) is supported vertically while passing through the staple cartridge (37).

Wedge slide (610) also includes a pair of laterally opposed outer slide rails (630) extending upwardly from base platform (612), and laterally opposed pair of outer slide rails (630) extending upwardly from both base platform (612) and raised platform (614). A pair of inner slide rails (632). The slider guides (630, 632) may also be referred to as "cam ramps" or "cam wedges". The slider rails (630, 632) of the present version extend substantially straight and upright from the respective top surfaces (618, 620) of the base platform (612) and raised platform (614) such that the slider rails (630, 632) pass through the bottom surface (616) Oriented obliquely relative to the horizontal plane and relative to the vertical-longitudinal plane. More specifically, due to the laterally inwardly curved configuration of the base platform (612), each slider rail (630, 632) is inclined at the same angle (α) relative to the vertical-longitudinal plane (or relative to any plane parallel thereto). Curved laterally inwards such that the slider rails (630, 632) on each side of the vertical-longitudinal plane are parallel to each other and such that the wedge-shaped slider rails (610) are ) configuration) is basically symmetrical. In some versions, the angle of inclination (α) may be about 7.5°. Alternatively, any other suitable angle may be used.

The slider guides (630, 632) are configured to be received within corresponding longitudinally extending slots (73) of the cartridge body (70) and configured to slidably contact or otherwise engage corresponding slots (73) of the cartridge body (70). Respective side surfaces of wall (71 ), thereby stabilizing wall (71 ) horizontally as wedge sled (610) moves longitudinally through cartridge (37). For example, outer and inner slider rails (630, 632) can inhibit lateral inward and/or lateral outward deflection (eg, bending) of wall (71). In this regard, the laterally inwardly curved configuration of the slide rails (630, 632) of this version may be particularly suited to inhibiting laterally outward deflection of the wall (71). For example, slider guides (630, 632) of the present type can orient the corresponding wall (71) toward substantially on the vertical orientation bias. In this regard, the angle of inclination (θ) and/or angle of inclination (α) may be selected to achieve a desired amount of laterally inwardly directed force applied by each slider rail (630, 632) to the corresponding wall (71 ), which A desired amount of laterally inwardly directed force is sufficient to overcome such laterally outwardly directed force while causing limited or no laterally inwardly bending of the corresponding wall (71). Slots (615) may provide a predetermined amount of flexibility to laterally opposite halves of wedge-shaped slider (610) to minimize the corresponding The transverse direction of the wall (71) is inwardly curved. Accordingly, the slider guides (630, 632) may be considered to be resiliently biased laterally inward. In some versions, the slider guides (630, 632) may additionally or alternatively be configured to slidably contact or otherwise engage respective upper slot surfaces of corresponding slots (73) of the cartridge body (70), Upper deck (72) is thereby supported vertically as wedge sled (610) moves longitudinally through staple cartridge (37).

Wedge slide (610) also includes a central nose (650) extending upwardly from raised platform (614) between inner slide rails (632). In the example shown, a central nose ( 650 ) is laterally spaced from each recess ( 634 ) to define a top surface ( 620 ) of raised platform ( 614 ).

Central nose (650) is configured to be at least partially received within vertical slot (49) of staple cartridge (37). In some versions, central nose (650) is configured to slidably contact or otherwise engage inner wall (71) of cartridge body (70), thereby moving longitudinally through wedge sled (610) through the staple cartridge ( 37) vertically supports and/or horizontally stabilizes the inner wall (71 ), as described above with respect to the central nose (150, 250). For example, the central nose (650) may inhibit lateral inward deflection (e.g., bending) of the inner wall (71) that would otherwise be caused by a laterally inwardly directed force applied to the inner wall (71) by the corresponding inner slider rail (632) . Likewise, the inner slider rails (632) can inhibit lateral inward deflection of the outer wall (71) that would otherwise be induced by a laterally inwardly directed force applied to the outer wall (71) by the corresponding outer slider rail (630) (e.g., bending). In some versions, some lateral inward deflection of the inner and/or outer walls (71) may be permitted without deforming the overall outer shape of the staple cartridge (37), and more specifically, without causing a staple hole ( 51) Misalignment relative to corresponding staple forming pockets (53). Accordingly, as wedge sled (610) moves longitudinally through staple cartridge (37), central nose (650) and sled rails (630, 632) can cooperatively move toward each other at the respective longitudinal positions of each sled rail (630, 632). The cartridge body (70) provides improved horizontal stability.

E. Exemplary slider with bifurcated nose

Figure 19 shows an exemplary wedge slide (710) comprising a base including a base platform (712) and a central raised platform (714) extending upwardly from the base platform (712). In the example shown, base platform (712) has a substantially planar bottom surface (716) that defines a horizontal plane and is configured to enable a wedge sled (710) to move longitudinally through staple cartridge (37). Slide along the tray (74) lengthwise. Base platform (712) also has a pair of laterally opposed substantially planar top surfaces (718) parallel to bottom surface (716), and raised platform (714) similarly has laterally opposed pairs parallel to bottom surface (716). A pair of substantially planar top surfaces (720). Top surfaces (718, 720) are configured to face and/or slidably contact or otherwise engage corresponding bottom surfaces of corresponding walls (71) of cartridge body (70), thereby moving longitudinally in wedge-shaped slide (710) The corresponding wall (71) is supported vertically while passing through the staple cartridge (37).

Wedge slide (710) also includes a pair of laterally opposed outer slide rails (730) extending upwardly from base platform (712), and laterally opposed pair of outer slide rails (730) extending upwardly from both base platform (712) and raised platform (714). A pair of inner slide rails (732). The slider guides (730, 732) may also be referred to as "cam ramps" or "cam wedges". Slider rails (730, 732) of this version are each sloped or curved laterally inwardly from respective top surfaces (718, 720) of base platform (712) and raised platform (714) so that slider rails (730, 732) are relative to a horizontal plane and opposite to each other. Oriented obliquely in the vertical-longitudinal plane. More specifically, each slider guide (730, 732) is curved laterally inward at the same angle of inclination (α) with respect to the vertical-longitudinal plane (or with respect to any plane parallel thereto), such that each vertical-longitudinal plane The slider rails (730, 732) on the sides are parallel to each other and make the wedge-shaped slider rail (710) substantially symmetrical about the vertical-longitudinal plane (at least with respect to the configuration of the slider rails (730, 732)). In some versions, the angle of inclination (α) may be about 7.5°. Alternatively, any other suitable angle may be used. In the example shown, wedge slide (710) includes a pair of laterally opposing recesses (734) extending downwardly from the top surface (720) of raised platform (714) adjacent to corresponding inner slide rails (732) To help facilitate the laterally inwardly curved configuration of the inner slider rail (732). The depressions (734) may also be referred to as "undercuts." In some versions, recesses (734) may each extend at least partially along the length of a respective inner slider rail (732).

Slider rails (730, 732) are configured to be received within corresponding longitudinally extending slots (73) of the cartridge body (70) and configured to slidably contact or otherwise engage corresponding slots (73) of the cartridge body (70). The respective side surfaces of wall (71 ), thereby stabilizing wall (71 ) horizontally as wedge sled (710) moves longitudinally through cartridge (37). For example, outer and inner slider rails (730, 732) can inhibit lateral inward and/or lateral outward deflection (eg, bending) of wall (71). In this regard, the laterally inwardly curved configuration of the slide rails (730, 732) of this version may be particularly well suited to inhibit laterally outward deflection of the wall (71). For example, slider guides (730, 732) of the present type can direct the corresponding wall (71) toward substantially on the vertical orientation bias. In this regard, the angle of inclination (α) can be selected to achieve a desired amount of laterally inwardly directed force applied by each slider rail (730, 732) to the corresponding wall (71), which It is sufficient to overcome such laterally outwardly directed forces while causing limited or no laterally inwardly bending of the corresponding wall (71). Likewise, slider rails (730, 732) may each be attached to base platform (712) and raised platform (714) with a predetermined amount of flexibility, respectively, by allowing slider rails (730, 732) to be laterally moved when a threshold force is applied thereto. The outward elastic push minimizes the lateral inward bending of the corresponding wall (71). Accordingly, slider guides (730, 732) may be considered to be resiliently biased laterally inward. In some versions, the slider guides (730, 732) may additionally or alternatively be configured to slidably contact or otherwise engage respective upper slot surfaces of corresponding slots (73) of the cartridge body (70), Upper deck (72) is thereby supported vertically as wedge sled (710) moves longitudinally through staple cartridge (37).

Wedge slide (710) also includes a central nose (750) extending upwardly from raised platform (714) between inner slide rails (732). In the example shown, a central nose ( 750 ) is laterally spaced from each recess ( 734 ) to define a top surface ( 720 ) of raised platform ( 714 ). In this version, central nose (750) is bifurcated by longitudinally extending U-shaped slots (751) to facilitate lateral inward deflection (eg, bending) of central nose (750).

Central nose (750) is configured to be at least partially received within vertical slot (49) of staple cartridge (37). In some versions, central nose (750) is configured to slidably contact or otherwise engage inner wall (71) of cartridge body (70), thereby moving longitudinally through wedge sled (710) through the staple cartridge ( 37) vertically supports and/or horizontally stabilizes the inner wall (71 ), as described above with respect to the central nose (150, 250). For example, the central nose (750) may inhibit lateral inward deflection (e.g., bending) of the inner wall (71) that would otherwise be caused by a laterally inwardly directed force applied to the inner wall (71) by the corresponding inner slider rail (732) . Likewise, the inner slider rails (732) can inhibit lateral inward deflection of the outer wall (71) that would otherwise be induced by a laterally inwardly directed force applied to the outer wall (71) by the corresponding outer slider rail (730) (e.g., bending). In some versions, some lateral inward deflection of the inner and/or outer walls (71) may be permitted without deforming the overall outer shape of the staple cartridge (37), and more specifically, without causing a staple hole ( 51) Misalignment relative to corresponding staple forming pockets (53). In this regard, central nose (750) may flex laterally inward to accommodate such permitted lateral inward deflection of inner wall (71). Accordingly, as wedge sled (710) moves longitudinally through staple cartridge (37), central nose (750) and sled rails (730, 732) can cooperatively move toward each other at the respective longitudinal positions of each sled rail (730, 732). The cartridge body (70) provides improved horizontal stability.

While this version of wedge sled (110, 210, 310, 410, 510, 610, 710) is shown and described herein in connection with a staple cartridge (such as staple cartridge (37)) configured for use with a laparoscopic surgical stapler, it should be understood that other versions The wedge sleds (110, 210, 310, 410, 510, 610, 710) of the disclosed embodiments may be adapted for use with staple cartridges configured for use with non-laparoscopic surgical staplers in open surgical procedures. Examples of such non-laparoscopic surgical staplers are disclosed in U.S. Patent Publication No. 2020/0046350, published February 13, 2020, entitled "Firing System for Linear Surgical Stapler"; U.S. Patent Publication No. 2020/0046351, entitled "Decoupling Mechanism for Linear Surgical Stapler"; U.S. Patent Publication No. 2020/0046353, entitled "Clamping Assembly for Linear Surgical Stapler," published February 13, 2020; and U.S. Application No. 16/537,005, entitled "Linear Surgical Stapler," filed May 9. The disclosures of these references are incorporated herein by reference.

V. Exemplary Biasing Features Integrated into the Cartridge

In some instances, it may be desirable to provide a staple cartridge with improved horizontal stability compared to staple cartridge ( 37 ) by laterally inwardly biasing the wall of the cartridge body adjacent wedge sled ( 41 ). FIG. 20 shows an exemplary staple cartridge (868) that provides such functionality. Cartridge (868) is similar to cartridge (37) described above except as otherwise described below. For example, staple cartridge (37) is configured to be removably mountable into channel (39) of lower jaw (16).

As shown, staple cartridge (868) of this example includes a cartridge body (870) having a plurality of walls (871 ) and presenting an upper deck (872). Cartridge body (870) also has a plurality of longitudinally extending slots (873) positioned between respective walls (871). The cartridge body (870) is coupled to the lower cartridge tray (874). As shown, vertical slot (849) is formed through a portion of staple cartridge (868). Three rows of nail holes (851) are formed through the upper platform (872) on one side of the vertical slot (849), and another set of three rows of nail holes (851) are formed through the vertical slot (849). ) through the upper platform (872) on the other side.

In this version, the cartridge body (870) includes a pair of laterally opposed upper protrusions (875) extending laterally outward from opposite sides of the cartridge body (870) above the tray (874). Similarly, tray (874) includes a pair of laterally opposing lower protrusions (876) extending laterally outward from opposite sides of tray (874). The protrusions (875, 876) are configured to abut or otherwise engage respective side surfaces of the channel (39) of the lower jaw (16), whereby a wedge slide (not shown) such as the wedge slides (41, 110, 210, 310, 410, 510, 610, 710 described above) Either) horizontally stabilizes wall (871) as it moves longitudinally through staple cartridge (37). For example, protrusions (875, 876) can inhibit lateral outward deflection (eg, bending) of wall (871). In this regard, protrusions (875, 876) of this type can orient the corresponding wall (871) toward The bias is substantially vertically oriented. In some versions, one or both upper protrusions (875) may be omitted. In some other versions, one or both lower protrusions (876) may be omitted.

VI. Exemplary cartridge with a cartridge tray with protrusions for reducing tissue gaps

In some cases, it may be desirable to provide a tissue gap between the upper platform of the staple cartridge and the inner surface of the anvil (18) with the staple forming pockets (53) that can be reduced compared to the staple cartridge (37), thereby A cartridge of more tightly formed staples (47) is produced. FIG. 21 shows an exemplary staple cartridge (968) that provides such functionality. Cartridge (968) is similar to cartridge (37) described above except as otherwise described below. For example, staple cartridge (37) is configured to be removably mountable into channel (39) of lower jaw (16).

As shown, the staple cartridge (968) of the present example includes a cartridge body (70) coupled to a lower cartridge tray (974). In this version, the tray (974) includes a pair of laterally opposite outer projections (975) extending downwardly from the lower surface of the tray (974), and a pair of laterally opposing protrusions (975) extending downwardly from the lower surface of the tray (974). Inner protrusion (976). In some versions, protrusions (975, 976) may each have a height (H) relative to the lower surface of tray (974) that is greater than the material thickness (T) of tray (974). For example, protrusions (975, 976) may each have a height (H) of about 0.010 inches relative to the lower surface of tray (974), while tray (974) may have a material thickness (T) of about 0.007 inches. Alternatively, protrusions (975, 976) of any other suitable height may be used. In any event, the protrusions (975, 976) are configured to abut or otherwise engage the upper surface of the channel (39) of the lower jaw (16), thereby supporting the tray (974) vertically on the lower jaw (16). ) above the upper surface of the channel (39). For example, protrusions (975, 976) may cause the upper surface of tray (974) (e.g., along which a wedge slide such as wedge slide (310) may translate longitudinally) relative to the upper surface of channel (39), as compared to tray (74). The height of the surface increases the height (H) of the protrusions (975, 976), thereby also increasing the height of the upper platform (72) relative to the upper surface of the channel (39) by the height (H) of the protrusions (975, 976). Accordingly, the upper platform (72) may be spaced apart from the inner surface of the anvil (18) having the staple forming pockets (53) by inner and outer tissue gaps (Gi, Go), respectively The height (H) of those interstitial small protrusions (975, 976) provided in the presence of protrusions (975, 976). For example, the inner tissue gap (Gi) can be about 0.04 inches, and/or the outer tissue gap (Go) can be about 0.055 inches. In this manner, staple cartridge (968) may cooperate with anvil (18) to produce more tightly formed staples (47) than those produced by staple cartridge (37), and thus may be capable of interacting with staple cartridges ( 37) resulting in a tighter clamping of tissue than those produced.

VII. Examples of combinations

The following examples relate to various non-exhaustive ways in which the teachings herein can be combined or applied. It should be understood that the following examples are not intended to limit the scope of coverage of any claims that may be presented at any time in this patent application or a subsequent filing of this patent application. No disclaimer of liability is intended. The following examples are provided for illustrative purposes only. It is contemplated that the various teachings herein can be arranged and applied in numerous other ways. It is also contemplated that some variations may omit certain features mentioned in the following embodiments. Accordingly, none of the aspects or features mentioned below should be considered conclusive unless expressly indicated otherwise at a later date, eg, by the inventor or successors of the concerned inventor. If any claims presented in this patent application or a subsequent filing related to this patent application include additional features other than those mentioned below, these additional features should not be presumed to be for any reason relevant to patentability and was added.

Example 1

A staple driver actuator for a surgical stapler, the staple driver actuator comprising: (a) a base having at least one bottom surface, wherein the at least one bottom surface defines a plane, wherein the at least one bottom surface Be configured to slide longitudinally with respect to the suture assembly of this surgical stapler; (b) at least one guide rail, this at least one guide rail extends upwardly from this base, wherein this at least one guide rail comprises at least one guide rail cam surface, wherein this at least one guide rail The cam surface is inclined relative to the plane; (c) a first surface texture on the first portion of the staple driver actuator; and (d) a second surface texture on the staple On a second portion of the drive actuator, wherein the second surface texture is smoother than the first surface texture.

Example 2

The staple driver actuator of embodiment 1, wherein the first surface texture comprises a metal injection molded granular surface texture.

Example 3

The staple driver actuator of any one or more of embodiments 1-2, wherein the second surface texture comprises a machined surface texture.

Example 4

The staple driver actuator according to any one or more of embodiments 1-3, wherein the first surface texture is configured to engage the first portion of the stapling assembly, wherein the second surface texture is configured to A second portion of the suturing assembly distinct from the first portion is capable of engaging.

Example 5

The staple driver actuator of any one or more of embodiments 1-4, wherein the second surface texture is exhibited by the at least one rail cam surface of the at least one rail.

Example 6

The staple driver actuator according to any one or more of embodiments 1 to 5, wherein the base further has at least one top surface, wherein the at least one top surface is parallel to the plane, wherein the second surface is textured Reason The at least one top surface is present.

Example 7

The staple driver actuator of any one or more of embodiments 1-6, wherein the base further has at least one distal cam surface, wherein the at least one distal cam surface is inclined relative to the plane, wherein The second surface texture is exhibited by the at least one distal cam surface.

Example 8

The staple driver actuator according to any one or more of embodiments 1-7, further comprising at least one side surface, wherein the first surface texture is exhibited by the at least one side surface.

Example 9

The staple driver actuator according to any one or more of embodiments 1-8, further comprising at least one proximal end surface, wherein the first surface texture is exhibited by the at least one proximal end surface.

Example 10

The staple driver actuator according to any one or more of embodiments 1-9, wherein the second surface texture is exhibited by the at least one bottom surface.

Example 11

The staple driver actuator according to any one or more of embodiments 1-9, wherein the first surface texture is exhibited by the at least one bottom surface.

Example 12

The staple driver actuator of any one or more of embodiments 1-11, wherein the base comprises a metallic material.

Example 13

The staple driver actuator of any one or more of embodiments 1-12, wherein the at least one rail comprises a metallic material.

Example 14

The staple driver actuator according to any one or more of embodiments 1-13, wherein the base and the at least one rail are integrally formed together as a single piece.

Example 15

An apparatus comprising: (a) a staple cartridge, wherein the staple cartridge includes a cartridge tray, a cartridge body, and a plurality of staple drivers movable relative to the cartridge tray and the cartridge body; and (b) according to embodiments 1 to 14 The staple driver actuator of any one or more of the above, wherein the first surface texture is configured to engage the cartridge body, wherein the second surface texture is configured to engage the plurality of staple drivers.

Example 16

A device comprising: (a) jaws, wherein the jaws define a longitudinal axis; (b) anvils, movable relative to the jaws; (c) cartridges, wherein the cartridges are insertable into the jaws In the mouth, wherein this storehouse comprises: (i) storehouse body, and (ii) at least one staple driver, this at least one staple driver can move relative to this storehouse body; With (d) staple driver actuator, this staple driver actuates A driver is disposed within the cartridge, wherein the staple driver actuator includes: (i) a first surface configured to engage the cartridge body during translation of the staple driver actuator along the longitudinal axis , wherein the first surface has a first surface texture, and (ii) a second surface configured to engage the at least one staple driver during translation of the staple driver actuator along the longitudinal axis, Wherein the second surface has a second surface texture that is smoother than the first surface texture.

Example 17

The apparatus of embodiment 16, wherein the first surface texture comprises a metal injection molded granular surface texture, and wherein the second surface texture comprises a machined surface texture.

Example 18

The apparatus according to any one or more of embodiments 16-17, wherein the second surface is configured to cammably engage the at least one staple driver actuator during translation of the staple driver actuator along the longitudinal axis. Nail drive.

Example 19

A method of manufacturing a staple driver actuator for a surgical stapler, the method comprising: (a) forming the staple driver actuator such that the staple driver actuator includes: (i) a base, (ii) at least A rail, the at least one rail extends upwardly from the base, and (iii) a plurality of surfaces each having a first surface texture; (b) modifying at least one selected surface in the plurality of surfaces to use the ratio A second, smoother surface texture of the first surface texture replaces the first surface texture of the at least one selected surface; and (c) maintaining the first surface texture on at least one remaining surface of the plurality of surfaces.

Example 20

The method of embodiment 19, wherein forming the staple driver actuator comprises metal injection molding the staple driver actuator, wherein modifying the at least one selected surface comprises machining the at least one selected surface.

VIII. Miscellaneous

Any one or more of the teachings, expressions, embodiments, examples, etc. described herein may be combined with any one or more of the teachings, expressions, embodiments, examples, etc. described in the following patents Combination: U.S. Patent Application [Attorney Reference END9296USNP1] No. [Attorney Reference END9296USNP1] filed on the same date as this application, and named "Surgical Stapler End Effector Sled U.S. Patent Application [Attorney's Reference END9296USNP2] No. "Having Staple Driver Support Feature"; U.S. Patent Application [Attorney's Reference END9296USNP3] No. "Surgical Stapler End Effector Sled Having Tapered Distal End" filed on the same date as this application; and The U.S. Patent Application [Proxy Reference END9296USNP5] No. of the name submitted on the same date of this application as "SurgicalStapler End Effector Sled Having Cartridge Biasing Feature"; the U.S. Patent Application [ Attorney's Reference END9296USDP1]; and/or US Patent Application [Attorney's Reference END9296USDP2] entitled "Surgical Stapler End Effector Sled" filed on the same date as this application. The disclosure of each of these applications is incorporated herein by reference.

It is to be understood that any one or more of the teachings, expressions, embodiments, examples, etc. described herein may be combined with any one or more of the other teachings, expressions, embodiments, examples, etc. described herein. to combine. Accordingly, the above teachings, expressions, embodiments, examples, etc. should not be viewed in isolation from each other. Various suitable ways in which the teachings herein may be combined will be apparent to those of skill in the art in view of the teachings herein. Such modifications and variations are intended to be included within the scope of the claims.

It should be understood that any patent, patent publication, or other disclosure material that is said to be incorporated by reference herein, whether in whole or in part, is only to the extent that the incorporated material is consistent with the prior definitions, statements, or other disclosures set forth in this disclosure. The material is incorporated herein to the extent that it does not conflict. Accordingly, and to the extent necessary, the disclosure explicitly set forth herein supersedes any conflicting material incorporated herein by reference. Any material, or portion thereof, that is said to be incorporated herein by reference but that conflicts with existing definitions, statements, or other disclosed material set forth herein will only be disproved between the incorporated material and the existing disclosed material. Incorporate to the extent of conflict.

Devices of the type described above find application in conventional medical treatments and procedures performed by medical professionals, as well as in robot-assisted medical treatments and procedures. By way of example only, the various teachings herein may be readily incorporated into a robotic surgical system, such as the DAVINCI ^™ system from Intuitive Surgical, Inc. (Sunnyvale, California).

Devices of the type described above may be designed to be disposed of after a single use, or they may be designed to be used multiple times. In either or both cases, these versions can be reconditioned for reuse after at least one use. Reconditioning can include any combination of disassembly of the unit followed by cleaning or replacement of specific parts and subsequent reassembly. In particular, some versions of the device may be disassembled, and any number of specific parts or portions of the device may be selectively replaced or removed in any combination. Some versions of the devices may be reassembled for subsequent use at a reconditioning facility or by the user immediately prior to surgery upon cleaning and/or replacement of certain components. Those skilled in the art will appreciate that reconditioning of a device may utilize a variety of techniques for disassembly, cleaning/replacement, and reassembly. The use of such techniques, as well as the resulting prosthetic devices, are within the scope of this application.

By way of example only, the versions described herein may be sterilized before and/or after surgery. In one sterilization technique, the device is placed in a closed and sealed container such as a plastic or TYVEK bag. The container and device can then be placed in a field of radiation that can penetrate the container, such as gamma radiation, x-rays, or high energy electrons. Irradiation kills bacteria on the device and in the container. The sterilized device can then be stored in a sterile container for later use. The device may also be sterilized using any other technique known in the art, including but not limited to beta or gamma radiation, ethylene oxide, or steam.

Having shown and described various embodiments of the present invention, further improvements of the methods and systems described herein can be effected by appropriate modification by one of ordinary skill in the art without departing from the scope of the present invention. Several such possible modifications have been mentioned, and others will be apparent to those skilled in the art. For example, the examples, embodiments, geometries, materials, dimensions, ratios, steps, etc. discussed above are illustrative and not required. Accordingly, the scope of the present invention should be considered in terms of the following claims and is understood not to be limited to the details of structure and operation shown and described in the specification and drawings.

Claims (20)

1. A staple driver actuator for a surgical stapler, said staple driver actuator comprising: (a) a base having at least one bottom surface, wherein the at least one bottom surface defines a plane, wherein the at least one bottom surface is configured to slide longitudinally relative to a stapling assembly of the surgical stapler; (b) at least one rail extending upwardly from said base, wherein said at least one rail includes at least one rail cam surface, wherein said at least one rail cam surface is inclined relative to said plane; (c) a first surface texture on the first portion of the staple driver actuator; and (d) a second surface texture on the second portion of the staple driver actuator, wherein the second surface texture is smoother than the first surface texture. 2. The staple driver actuator of claim 1, wherein the first surface texture comprises a metal injection molded granular surface texture. 3. The staple driver actuator of claim 1, wherein the second surface texture comprises a machined surface texture. 4. The staple driver actuator of claim 1 , wherein the first surface texture is configured to engage the first portion of the suturing assembly, wherein the second surface texture is configured to engage the first portion of the suturing assembly. A second portion of the suturing assembly distinct from the first portion. 5. The staple driver actuator of claim 1, wherein the second surface texture is exhibited by the at least one rail cam surface of the at least one rail. 6. The staple driver actuator of claim 1 , wherein the base further has at least one top surface, wherein the at least one top surface is parallel to the plane, wherein the second surface texture is formed by the At least one top surface is present. 7. The staple driver actuator of claim 1 , wherein the base further has at least one distal cam surface, wherein the at least one distal cam surface is inclined relative to the plane, wherein the second A surface texture is exhibited by the at least one distal cam surface. 8. The staple driver actuator of claim 1, further comprising at least one side surface, wherein the first surface texture is exhibited by the at least one side surface. 9. The staple driver actuator of claim 1, further comprising at least one proximal end surface, wherein the first surface texture is exhibited by the at least one proximal end surface. 10. The staple driver actuator of claim 1, wherein the second surface texture is exhibited by the at least one bottom surface. 11. The staple driver actuator of claim 1, wherein the first surface texture is exhibited by the at least one bottom surface. 12. The staple driver actuator of claim 1, wherein the base comprises a metallic material. 13. The staple driver actuator of claim 1, wherein the at least one rail comprises a metallic material. 14. The staple driver actuator of claim 1, wherein the base and the at least one rail are integrally formed together as a single piece. 15. An apparatus comprising: (a) a staple cartridge, wherein the staple cartridge includes a cartridge tray, a cartridge body, and a plurality of staple drivers movable relative to the cartridge tray and the cartridge body; and (b) The staple driver actuator of claim 1, wherein the first surface texture is configured to engage the cartridge body, and wherein the second surface texture is configured to engage the plurality of staple drivers. 16. An apparatus comprising: (a) jaws, wherein the jaws define a longitudinal axis; (b) an anvil movable relative to the jaws; (c) a cartridge, wherein the cartridge is insertable into the jaw, wherein the cartridge comprises: (i) the chamber body, and (ii) at least one staple driver movable relative to the cartridge body; and (d) a staple driver actuator disposed within the cartridge, wherein the staple driver actuator comprises: (i) a first surface configured to engage the cartridge body during translation of the staple driver actuator along the longitudinal axis, wherein the first surface has a first surface texture ,and (ii) a second surface configured to engage the at least one staple driver during translation of the staple driver actuator along the longitudinal axis, wherein the second surface has a thickness greater than the A second surface texture that is smoother than the first surface texture. 17. The apparatus of claim 16, wherein the first surface texture comprises a metal injection molded granular surface texture, wherein the second surface texture comprises a machined surface texture. 18. The apparatus of claim 16, wherein the second surface is configured to cammably engage the at least one staple driver during translation of the staple driver actuator along the longitudinal axis. 19. A method of manufacturing a staple driver actuator for a surgical stapler, the method comprising: (a) forming the staple driver actuator such that the staple driver actuator comprises: (i) base, (ii) at least one rail extending upwardly from the base, and (iii) a plurality of surfaces each having a first surface texture; (b) modifying at least one selected surface of the plurality of surfaces to replace the first surface texture of the at least one selected surface with a second surface texture that is smoother than the first surface texture; and (c) maintaining the first surface texture on at least one remaining surface of the plurality of surfaces. 20. The method of claim 19, wherein forming the staple driver actuator comprises metal injection molding the staple driver actuator, wherein modifying the at least one selected surface comprises machining the at least one selected surface. Select the surface.